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At AT&T, we want our customers to have information to more fully understand and enjoy the services we offer. To help keep customers informed about our mass market broadband Internet access services, the AT&T website (www.att.com) describes the mass market wireless and wired broadband Internet access services we offer. In this document, we provide information about the network practices, performance characteristics, and commercial terms applicable to our mass market wired, mobile and Wi-Fi broadband Internet access services, consistent with the Federal Communications Commission’s Open Internet Rules. This information should help customers make informed choices about how to use those services, and will assist providers of Internet applications, content and services in developing, marketing and maintaining their Internet offerings. We encourage mass market customers and other users of our network to familiarize themselves with this information, and to provide AT&T with feedback about our mass market broadband Internet access services so that we can continue to provide an excellent experience.

Nothing in this document changes your rights and obligations, or ours, under our terms of service associated with the applicable products, Acceptable Use Policy (“AUP”) or Privacy Policy. This document and the information contained in it are provided for informational purposes only and may be changed at any time, without notice.

Network Practices

How does AT&T manage congestion with respect to its mass market broadband Internet access services?

AT&T strives to provide a high-quality Internet experience for all of our customers. Because the Internet consists of multiple interconnected networks and most Internet end points (e.g., websites and other content providers) are not directly connected to the AT&T network, AT&T must connect to and exchange traffic with other networks to provide its subscribers the capability of uploading data to or downloading data from Internet end points that are connected to those networks. To that end, AT&T has entered into commercially negotiated agreements to exchange traffic with those networks (and the networks with which those networks are connected) on mutually agreeable terms. The links AT&T and other networks use to exchange such traffic may become congested at times. Consistent with its agreements with those other networks and its long-standing practice, AT&T may establish or expand the connections between its network and other networks, but only on mutually agreeable terms. If AT&T is unable to reach agreement on terms of interconnection or network expansion with these other networks, it could affect customers’ ability to upload or download data to Internet endpoints connected to those networks. AT&T does not guarantee that it will establish or expand the connections between its network and other networks, or that subscribers will be able to upload data to or download data from Internet end points connected to other networks at any particular speed.

In addition, like the other networks that make up the Internet, the AT&T network is a shared network, which means that the transmission links and other network resources used to provide broadband services are shared among AT&T’s subscribers. AT&T manages this network for the benefit of all users based on a variety of factors, and our technical expertise. Nonetheless, temporary congestion may occur when a large number of customers in a concentrated area access the network at the same time or when some customers consume a very large amount of network capacity during busy periods, such as at stadium events, during peak usage times, or during planned network maintenance.

AT&T invests billions of dollars annually to address potential congestion in its broadband networks. As is common in the industry, we use network management practices and other tools to manage network resources for the benefit of all of our mobile broadband customers, especially during periods when network demand exceeds available network resources (also known as “congestion”). As you would expect, our network management practices and our service offerings have evolved over time to benefit our customers and take advantage of the billions we have spent to expand and augment our networks.

One network management practice we use to manage our network resources may affect certain customers with AT&T post-paid and AT&T PREPAIDSM unlimited mobile data plans (“AT&T Unlimited Data Plans”). Specifically, if a customer on an AT&T Unlimited Data Plan exceeds 22GB of data usage in a billing period, he or she may experience reduced data speeds and increased latency during periods of congestion as compared to other customers using the same cell site. As always, even when subject to network management practices, these customers have the comfort of knowing that, no matter how much data they use in a billing cycle, they will never be subject to overage charges and will pay a single monthly flat rate. That is our essential promise with the AT&T Unlimited Data Plans. Reduced speeds and increased latency may cause web sites to load more slowly or affect the performance of data-heavy activities such as video streaming or interactive gaming. However, an affected AT&T Unlimited Data Plan customer will experience reduced speeds and increased latency only if he or she has already exceeded his or her 22GB data usage threshold in a billing period and uses data at a cell site experiencing network congestion at the same moment. As soon as the congestion at the cell site abates, or if the customer’s session migrates to an uncongested cell site, speeds and latency are not affected. In addition, this network management practice adjusts dynamically to address the amount of congestion, which can start and stop over a very short time period (often measured in fractions of a second), further minimizing any customer impact. Because the amount of congestion at a cell site can vary significantly, the performance impact for the affected AT&T Unlimited Data Plan customer may also vary significantly, but such impact will last only as long as the site is congested.

We will notify AT&T Unlimited Data Plan customers during each billing cycle when their usage reaches 75% of the 22GB threshold (i.e., 16.5GB) so they can adjust their usage to avoid network management practices that may result in slower data speeds.

We apply a comparable network management practice to AT&T’s Wireless Home Phone & Internet plans with 250GB and 500GB data allotments, which are available in select areas, except that such practice is “always on” and may affect customers during periods of congestion regardless how much data they have used in a billing period. Specifically, such customers may experience reduced data speeds and increased latency during periods of congestion as compared to other customers using the same cell site. As soon as the congestion at the cell site abates, speeds and latency will no longer be affected. In addition, this network management practice adjusts dynamically to address the amount of congestion, which can start and stop over a very short time period (often measured in fractions of a second), further minimizing any customer impact. Because the amount of congestion at a cell site can vary significantly, the performance impact for the affected AT&T Unlimited Data Plan customer may also vary significantly, but such impact will last only as long as the site is congested.

With the ever increasing growth in smart phone and tablet usage on our networks, and the growing prevalence of video downloads, AT&T has deployed a reasonable network management video optimization technique in our mobile data network. That technique delivers recorded video to the user's device in a "just in time" fashion (“Buffer Tuning”). Buffer Tuning only applies to internet browser traffic (HTTP, port 80) for recorded video downloads, regardless of the source (including AT&T branded or 3rd party content), and does not affect real-time streaming video. Without Buffer Tuning, video content may be completely delivered to the device and charged against the user's data plan regardless of whether it is viewed. With Buffer Tuning, a sufficient amount of video is delivered to the device so that the user can start viewing the video, and the remainder of the video is delivered just in time to the device as needed for uninterrupted viewing. This optimizes the user's data plan consumption. Additionally, this frees up network resources for all users. Buffer Tuning does not alter video content and should not directly introduce any adverse impact to the viewing experience.

Another reasonable network management practice we use to more efficiently manage our network resources is Stream Saver, which is a feature we offer on many of our wireless plans that include data. Stream Saver allows customers to watch more video over our wireless network while using less data by streaming content recognized as video content at Standard Definition quality, similar to DVD (about 480p). Stream Saver applies only to recognized video content delivered over AT&T’s wireless network. Once activated by AT&T on a customer’s account for plans that include Stream Saver, the customer can turn it off and back on at any time via the customer’s online account or by calling AT&T. Content providers can opt out of Stream Saver, in which case Stream Saver does not impact delivery of their video content. Stream Saver is discussed further below, and more information is available here.

Does AT&T limit data usage? Does AT&T provide any tools to help customers monitor and control their data usage?

We have developed data plans for our wired and mobile broadband Internet access services so that our customers can choose from a variety of rate plans that best reflect their own usage levels, and the manner in which they intend to use their service. For example, some AT&T data plans designated for use only with a basic phone or smart phone may not be used with a LaptopConnect card, tablet, or stand-alone mobile hotspot device. However, customers wishing to use their service in such a manner, such as with a mobile hotspot device, may purchase other plans that permit such use. AT&T provides usage calculators, alerts, and other tools for our wired and mobile broadband Internet access services to assist customers in estimating their anticipated usage levels. For more information, please click here (wired) and here (mobile). In addition, we send notices to our customers when they are approaching the applicable usage thresholds for our tiered wired and mobile services.

Our Mobile Share Advantage Plans provide customers allotments of high speed data that they may share among different devices, and some of our AT&T PREPAIDSM plans (not including Wireless Home Phone & Internet or Mobile Hotspot) provide an allotment of high speed data to the specific line. Once Mobile Share Advantage or these AT&T PREPAIDSM customers exceed their allotments of high speed data -- which includes the plan data, any available Rollover Data or other data allotments customers may have -- during a billing period, they may continue to consume data at no extra charge, but at significantly lower speeds when connected to the cellular network. Specifically, after one of these customers uses all available data allotments in a billing cycle, the customer’s service over the cellular network will transmit data at a maximum of 128Kbps for the remainder of the billing cycle unless the customer upgrades to a rate plan with a higher allotment of high speed data access before the end of the billing cycle. Once a customer’s speeds are limited like this, the customer’s connection over the cellular network should still allow viewing a web page or checking email. Bandwidth-intensive activities, including audio and video streaming, picture and video messaging, select apps and services, as well as other usage (including sponsored data) will be impacted and may not be fully functional. But, when the next billing cycle begins, the customer will once again have high speed data access. We will notify customers during each billing cycle when their data usage reaches 75%, 90% and 100% of their monthly high speed data allotment so that they are aware of their amount of data usage and can make adjustments to avoid slower speeds. When connected to a Wi-Fi network, the customer’s speed will not be impacted. For information regarding Rollover Data for Mobile Share Advantage Plans, click here, and for AT&T PREPAIDSM plans, click here.

We also have a sponsored data program that enables third parties to pay for the data usage for specific content on behalf of eligible AT&T wireless customers. With AT&T Sponsored Data, eligible customers can sample, browse, stream and enjoy applications, content and services provided by data sponsors without using up their monthly data allotments. Sponsored data thus effectively extends a customer’s data usage allotment, and enables providers of online content, applications and services to encourage users to sample their services. For information about AT&T’s sponsored data program, click here.

Another way we help wireless customers manage their data usage is through Stream Saver, which is a feature offered on many of our wireless plans that include data. Stream Saver allows customers to watch more video over our wireless network while using less data by streaming content recognized as video content at Standard Definition quality, similar to DVD (about 480p). Stream Saver requires a compatible device and, once activated by AT&T on a customer’s account for plans that include Stream Saver, the customer can turn it off and back on at any time via the customer’s online account or by calling AT&T. Stream Saver may not be able to recognize all video content, and any unrecognized higher resolution video will continue to stream at its normal speed and resolution. Content providers can opt out of Stream Saver, in which case Stream Saver does not impact their video content. For more information about Stream Saver, click here.

For those geographic areas that are not served by AT&T’s owned and operated mobile networks, we try to provide customers with data services through agreements with other carriers. The use of customers’ devices to access data over another carrier’s networks – both domestic and international – is called “off-net” or “roaming” usage. Our ability to make off-net or roaming services available to customers is based on a variety of dynamic factors, including business considerations, the terms of the agreements we have at any given time with other wireless carriers, and the network technology, frequency(ies) and functionality of those networks. We do not guarantee the availability, quality of coverage or speed for data services that are accessed using other carrier networks and we may reduce speeds or suspend the data service available on these networks at any time without notice. We update our coverage maps regularly to show where we provide domestic off-net and international roaming services. To obtain the most recent coverage updates you may access the maps here.

Does AT&T favor certain Internet applications by blocking, throttling or modifying particular protocols on its broadband Internet access service?

No, AT&T does not favor certain Internet applications by blocking, throttling or modifying particular protocols, protocol ports, or protocol fields in ways not prescribed by the protocol standards. However, in response to a specific security threat against our network or our customers, AT&T may occasionally need to limit the flow of traffic from certain locations or take other appropriate actions. In addition, we prevent the use of certain ports on our wired and Wi-Fi broadband Internet access services to help protect our customers and network against malicious activity, as discussed below.

The AT&T Copyright Alert Program was established to respond to alleged copyright infringement activities using peer-to-peer file sharing, and attempts to educate customers about the importance of protecting copyright and lawful use of content available over the Internet. Under the program, content owners may notify AT&T of alleged copyright infringement based on the IP address of a user. AT&T then will attempt to identify a subscriber account based on that IP address and forward a copyright alert to the subscriber account, advising the account holder of the allegation and providing information about online copyright infringement. If a subscriber receives additional alerts, we may temporarily redirect the account holder’s broadband Internet access service to a webpage where the account holder must review material on the importance of copyright and the lawful use of content available over the Internet. Upon completion of this review, such redirection will be discontinued and the subscriber’s service will be restored to normal. After this stage, if a subscriber continues to receive additional alerts, then AT&T may take action consistent with Section 512(i) of the Digital Millennium Copyright Act, which may result in termination of the subscriber/accountholder’s broadband Internet access service. Account holders’ personally identifiable information is protected throughout this process —AT&T will not provide such information to content owners unless required to do so by court order. For more information about AT&T’s Copyright Alert Program, please go to: https://copyright.att.net/home.

What practices has AT&T adopted to manage network security?

AT&T takes the security of our customers and our network very seriously. We proactively monitor network activity to help guard against a wide range of security threats, including viruses, botnets, worms, distributed denial of service attacks, SPAM, and other harmful activity. We encourage customers to adopt their own security practices.

We use a variety of network tools to monitor network activity and health to maintain its stability and functionality, to protect the network against threats, and for other operational purposes. We store the information we gather through this monitoring for only as long as we have a business purpose to maintain it. The AT&T Privacy Policy describes how we collect, use and share this information. You can view AT&T’s Privacy Policy at: www.att.com/privacy.

If we detect a security threat, we will typically attempt to isolate the threat and minimize the impact to network service. We may use a variety of security measures to protect the network, including blocking malicious or unlawful traffic, redirecting the flow of traffic over some portions of our network, or taking other actions to address the threat. For example, as described in more detail below, we block certain ports that transfer malicious or disruptive traffic (such as Ports 25, 135, 139, 445, and 1900). We attempt to limit actions to the specific portions of our network or customer base impacted by the security threat and only for as long as necessary to mitigate the threat.

AT&T may scan or analyze network addresses that are registered through AT&T, including addresses that may have been delegated to customers, and/or routes that originate from AT&T-provided networks to detect vulnerabilities that might be used to compromise AT&T or customer assets or might be used in attacks against others. In doing so, we seek to avoid disrupting network service to customers. We may use information derived from these activities to identify and address security issues or to notify customers of issues.

As noted above, AT&T blocks certain ports that transfer malicious or disruptive traffic to protect our customers and our network. Below is more information about port blocking that is currently in place. We may block additional ports in the future based upon threat assessments.

Port

Transport

Protocol

Direction

Threats

0

TCP

Reserved

Both

Reserved Port

19

UDP

Chargen

Both

Reflective DDOS

25

TCP

SMTP

Outbound

SPAM, Malware

68

UDP

BOOTP

Outbound

DHCP server spoofing

123

UDP

NTP

Both

Reflective DDOS

135

TCP

NetBios

Both

Worms, Malware, Reflective DDoS

139

TCP

NetBios

Both

Worms, Malware

445

TCP

MS-DS SMB

Both

Worms, Malware

520

UDP

RIPv1

Both

Reflective DDOS

1900

UDP

SSDP

Both

Reflective DDOS

3479

TCP

Twrpc

Both

End user device instability

7547

TCP

CWMP

Inbound

End user device instability

61001

TCP

IPDR

Inbound

Data exposure, end user device instability

Port 0/TCP: Port 0 is a reserved port. This port should not be used for any applications. Blocking protects our customers from potentially harmful types of network abuses.

Port 19/UDP: Port 19 Chargen is a protocol designed to generate a stream of characters for debugging and measurement. Because more recent tools have been developed for measurement and debugging purposes, blocking protects against use of this port in Reflective DDOS attacks.

Port 25/TCP: Simple Mail Transport Protocol (SMTP) is used to send email. Port 25/TCP may be blocked from customers with dynamically-assigned Internet Protocol (IP) addresses to protect systems from becoming a mail relay for SPAM. Customers can subscribe to AT&T SMTP services if they need to host an SMTP server on the Internet.

Port 68/UDP: Port 68 is used to obtain dynamic IP address information from a dynamic host configuration protocol (DHCP) server. Port 68 may be blocked to eliminate the risk of exposure to a rogue DHCP server.

Port 123/UDP: Network Time Protocol (NTP) is used to accurately synchronize computer time of day to a reference time server. Some aspects of Port 123 may be limited to minimize malicious use. Poorly-configured NTP servers can be used for Reflective DDOS attacks, and some devices provide NTP service inadvertently, which exacerbates the port’s malicious use.

Port 135/TCP: NetBIOS is a network file sharing protocol and is also known as Common Internet File System or LanManager. Blocking protects customers from exposing files unintentionally, worms, and viruses.

Port 139/TCP: NetBIOS is a network file sharing protocol and is also known as Common Internet File System or LanManager. Blocking protects customers from exposing critical system files unintentionally, which could give system access to a malicious actor.

Port 445/TCP: NetBIOS is a network file sharing protocol and is also known as Common Internet File System or LanManager. Blocking mitigates a potential threat to certain operating systems. Similar to our blocking of Ports 135 and 139, blocking Port 445 protects customers from exposing files unintentionally, worms, and viruses.

Port 520/UDP: RIPv1 - UDP port 520 is used by the Routing Information Protocol (RIP) to share network routing information. RIPv1 was designed to support route information sharing on small classful (class A, B, C, D) networks and has limited usefulness in today’s classless networks. Port 520 has been used by malicious actors to generate Reflective DDOS attacks.

Port 1900/UDP: Universal Plug and Play (UPnP) is a protocol standard designed to allow device discovery over a local network. Some home routers may expose this port to the Internet, which could allow attackers to defeat the security attributes of Network Address Translation (NAT) and allow attackers to use the port for Reflective DDOS attacks.

Port 3479/TCP: Twrpc is a protocol used for remote management of end user devices. Blocking this port protects customers from improper use of the port, which can cause end user device instability.

Port 7547/TCP: CPE WAN Management Protocol (CWMP) is a protocol used for remote management of end user devices. Blocking this port protects customers from improper use of the port, which can cause end user device instability.

Port 61001/TCP: Internet Protocol Detail Record (IPDR) is a specification used to collect information from end user devices including device configuration data. Blocking TCP port 61001 prevents certain types of malicious activity including data exposure and end user device attacks.

Does AT&T restrict the types of devices that customers can use with its mass market broadband Internet access services?

AT&T customers may use devices of their choice (PC, Smartphones, Tablets, Smart TV, etc.) to connect to our wired broadband Internet access service via the wiring at their home or business premises, or via Wi-Fi connected to their AT&T wired broadband Internet access service (connection options vary based on device capabilities). Customers of our mass market mobile services may attach 3G- or 4G-capable devices of their choice to our mobile broadband Internet access services, so long as the devices are FCC-approved, compatible with the technology used in our mobile network, and do not harm our network or other users. AT&T has retired its 2G network and we will not activate 2G-only capable devices. Our wired and Wi-Fi networks require compatible Ethernet or Wi-Fi capable devices. AT&T generally does not support IEEE2 802.11b or earlier Wi-Fi protocols. Devices must also be used in a manner consistent with our terms of service and Acceptable Use Policy. For example, some data plans are designated for use with only a basic phone or smartphone, in which case customers may not use their device to provide an Internet access connection to other equipment/devices (such as computers, netbooks, tablets, other phones, USB modems, network routers, media players, gaming consoles, or other data-capable devices) by tethering, by SIM card transfer, or any other means. However, customers wishing to use their service with a mobile hotspot/tethering device may purchase a data plan that already includes such use.

Performance Characteristics

What factors affect the performance of my mass market broadband Internet access service?

AT&T offers many mass market broadband Internet access service options, each of which may have a different service capability speed. The term speed is commonly used as a shorthand way to describe the capacity at which a particular mass market broadband Internet access service can transmit data. This capacity is typically measured in the number of kilobits, megabits or gigabits that can be transmitted in one second (Kbps, Mbps or Gbps). Some applications, like a short email without attachments or basic web browsing, do not require high service capability speeds to function optimally. Other activities, like transferring large data files, can be performed faster with higher-speed services. Your service capability speed may not be suitable for some applications, particularly those involving real-time or near real-time, high-bandwidth uses such as streaming video or video conferencing.

Because service performance varies on an end-to-end basis, AT&T’s service capability speeds are limited to, and measured between, your location and a point on AT&T’s network, which constitutes only one segment of the end to end transmission path connecting your location to Internet websites or content providers. End-to-end performance of your service depends on a variety of factors, including: the number of subscribers simultaneously using the network; customer location; destination and traffic on the Internet; Wi-Fi connectivity; the capabilities and performance of your Local Area Network (LAN); interference with high frequency spectrum on your telephone line; wiring inside your premises, office or apartment; the capacity or performance of your devices or modem; the server with which you are communicating; internal network management factors (including overhead, which refers to the various control and signaling data required to achieve the reliable transmission of Internet access data); and the networks you and others are using when communicating.

AT&T offers a wide variety of services to its customers (including Voice over Internet Protocol (VoIP), Internet Protocol (IP)-video, unified messaging, Voice over LTE (VoLTE), enterprise networking services, and other services), which share AT&T’s network infrastructure and may affect the availability of network resources for broadband Internet access services. Your use of these services may affect the performance of your mass market broadband Internet access service. These services may rely on particular network practices to assign different levels of priority dynamically or statically. AT&T does not currently have the capability to make any such functionality available to edge providers. In addition, although AT&T engineers its network to accommodate all users and user types based on a variety of factors, including average and anticipated peak usage of the network, many factors cannot be anticipated or are outside of AT&T’s control. These factors can impact the availability of network resources for mass market broadband Internet access services at any particular time. Consequently, AT&T does not guarantee the performance of your service on an end-to-end basis.

Other factors that are relevant to specific services include, but are not limited to, the following:

  • Wired Services. Service performance may be affected by the wiring inside your premises, the distance between your premises and an AT&T central office, the capabilities of your computer, and the applications you use. In addition, to provide our U-verse TV customers with a consistently high-quality video service, the speed of AT&T broadband Internet access service may be reduced when a customer is using his or her U-verse TV service in a manner that requires high bandwidth. Please click here for our High-Speed Internet Access Terms of Service.
  • Mobile Services. Service performance may be affected by your proximity to a cell site, the capacity of the cell site, the number of other users connected to the same cell site and the services they are using, the surrounding terrain, use inside a building or a moving vehicle, radio frequency interference, the capabilities of your device, applicable network management practices as discussed above, and the applications you use. In addition, AT&T has designed its wireless services to provide our customers with a high-quality voice experience during simultaneous voice and data sessions, which may affect data performance, including but not limited to a temporary reduction in speed to minimize the likelihood of dropped calls.
  • Wi-Fi Services. Wi-Fi hot spots are generally provided at a given site on behalf of the business owner or operator for the benefit of their patrons. It is common practice that the Internet access is shared between both the business’ patrons and the business’ operational traffic. In some instances, business operational traffic may be prioritized to minimize the potential impact on critical communications, such as credit card processing. This prioritization may intermittently impact the speed available. Additionally, service performance may be affected by your proximity to a Wi-Fi hot spot, the capacity of the Wi-Fi equipment at the hot spot, the number of other users connected to the same site, the composition of the building where the hot spot is located (wood, concrete, etc.), radio frequency interference, the capabilities of your Wi-Fi capable device, the Internet connection to the Wi-Fi hot spot, per-user bandwidth limits used to provide fair Internet access at a hot spot, and speed tier options made available at the hot spot.

Where can I find information about the performance of my mass market broadband Internet access service?

Because many different factors can affect the performance of your mass market broadband Internet access service, AT&T does not guarantee specific performance levels (such as of speed or latency or packet loss) for our mass market broadband Internet access services. We strive to manage our network to provide you optimal performance. The performance you can expect to receive from the mass market broadband Internet access services we offer is described below.

Speed

  • Wired Service.
    • AT&T offers mass market wired broadband Internet access services in discrete speed tiers. Our mass market wired broadband Internet access customers should expect to see service capability speeds within the speed tier of their service plan. For example, a customer with AT&T's High Speed Internet Elite Service should expect service capability download speeds between 3.1 and 6.0 Mbps. Please click here for a list of our wired service offerings and expected speeds. To find out which speed tier is well-suited for the types of applications you use most often, please click here.
    • The table below sets forth data showing the median, and ranges of, actual download and upload speeds for AT&T’s mass market wired broadband Internet access services, by transport technology and speed tier. The range reported is from the 25th to the 75th percentile, which means that the 25th percentile lower bound is the value below which 25% of the test readings were, and the 75th percentile upper bound is the value below which 75% of the test readings were.
    • Unless a service tier is noted with an asterisk (*), the reported information comes from data compiled by the FCC’s Measuring Broadband America (MBA) initiative between March 2016 and August 2016. For more information about the FCC’s MBA initiative, including how speeds are measured, go to www.fcc.gov/measuring-broadband-america.
    • Service tiers noted with an asterisk were not included in the FCC’s MBA initiative either because they are new products with limited availability or do not meet the program’s reporting requirements. Information included below for such service tiers comes from data compiled independently by AT&T using the same speed testing technology and methodology used in the FCC’s MBA initiative. The data for these tiers are based on limited sample sizes, and will be updated periodically. An entry of “N/A” signifies that reliable data are not available.

      Product Name Technology Download Speed (Mbps) Upload Speed (Mbps)
      25th
      Percentile
      Median 75th Percentile 25th Percentile Median 75th Percentile
      FastAccess DSL Lite or High Speed Internet Basic or FastAccess Business DSL Lite ADSL 0.240 0.430 0.620 0.090 0.100 0.110
      Internet Basic 768 ADSL2+ 0.610 0.640 0.720 0.270 0.290 0.320
      FastAccess DSL Ultra or High Speed Internet Express or FastAccess Business DSL ADSL 1.0 1.2 1.6 0.240 0.260 0.310
      Internet Basic 1.5 or High Speed Internet Express ADSL2+ 0.8 1.3 1.7 0.300 0.330 0.360
      FastAccess DSL Xtreme or High Speed Internet Pro or FastAccess Business DSL Plus ADSL 2.2 2.4 3.0 0.300 0.360 0.440
      Internet Basic 3 ADSL2+ 2.1 2.6 3.4 0.420 0.470 0.510
      Internet Basic 3 VDSL2/GPON/BPON/EGPON 2.9 3.2 3.8 0.8 1.1 1.3
      Internet Basic 5 (5x1)* ADSL2+/VDSL2 6.0 6.0 6.1 1.2 1.3 1.3
      Internet Basic 5 (5x5)* GPON 6.0 6.1 6.1 6.1 6.3 6.3
      FastAccess DSL Xtreme 6.0 or High Speed Internet Elite or FastAccess Business DSL 6.0 ADSL 5.0 5.4 6.5 0.390 0.480 0.620
      Internet Basic 6 ADSL2+ 5.4 6.0 6.7 0.660 0.690 0.730
      Internet Basic 6 VDSL2/GPON/BPON/EGPON 5.6 6.4 7.6 0.4 0.6 0.7
      Internet 10 (10x1)* ADSL2+/VDSL2 12.8 12.8 12.8 1.0 1.1 1.1
      Internet 10 (10x10)* GPON 12.1 12.4 12.7 12.2 12.4 12.6
      Internet 12 ADSL2+ 11.5 12.3 14.2 0.9 0.9 1.0
      Internet 12 VDSL2/GPON/BPON/EGPON 14.3 13.9 15.2 1.7 1.7 1.9
      Internet 18 VDSL2/ADSL2+/GPON/BPON/EGPON 13.3 15.3 18.5 1.8 1.7 1.9
      Internet 24 VDSL2/ADSL2+/GPON 24.4 26.2 29.0 1.8 1.8 1.9
      Internet 25 (25x2)* ADSL2+ 25.8 25.8 25.9 1.9 1.9 1.9
      Internet 25 (25x5)* VDSL2 24.1 26.0 26.4 5.6 5.6 5.6
      Internet 25 (25x25) or Internet 25s* GPON 30.6 30.5 30.8 30.3 30.4 30.5
      Internet 45 VDSL2/GPON 40.2 42.6 49.5 5.7 5.7 5.9
      Internet 50 (50x10)* VDSL2 56.5 57.4 58.7 12.1 12.1 12.2
      Internet 50 (50x50) or Internet 50s* GPON 61.5 61.5 61.6 61.0 61.0 61.0
      Internet 75* (75x8)* VDSL2 78.5 79.2 80.0 7.4 7.4 7.4
      Internet 100 (100X20)* VDSL2 85.9 89.0 90.9 20.2 20.2 20.2
      Internet 100 or Internet 100s* GPON 122.7 122.9 123.2 122.0 122.0 122.0
      Internet 300 or Internet 300s* GPON 305.5 328.9 369.7 366.2 366.2 366.2
      Internet 1000 or Internet 1000s* GPON N/A N/A N/A N/A N/A N/A
      Internet 200* GPON 246 246 246 49 49 49
      Internet 200s* GPON 245 246 246 243 243 244
      Internet 500* GPON 520 520 520 98 98 98
      Internet 500s* GPON 520 520 520 468 469 471
      DIRECTV Internet 100x100* ETHERNET 116.5 120.6 124.3 118.8 120.9 124.4
      DIRECTV Internet 20x5* ETHERNET 19.7 20.6 21.5 6.4 6.7 7.0
      DIRECTV Internet 10x1* ETHERNET 10.8 11.1 11.4 2.3 2.9 2.3
      DIRECTV Internet 6x2* ETHERNET 7.1 7.6 7.8 2.9 2.9 3.0
      DIRECTV Internet 3x2* ETHERNET 2.6 2.9 2.9 2.8 2.8 3.1


  • Fixed Wireless Service. AT&T’s mass market fixed wireless broadband Internet access service provides qualified households and small business with Internet access service using LTE technology, an outdoor antenna affixed to the customer’s premises and an indoor Wi-Fi Gateway. The service is designed to provide high speed access to the Internet with download speeds of at least 10Mbps. It does not impose a maximum speed limit, and thus provides customers with the highest speed available from the network at the customer’s location and at a given point of time. Service performance may be affected by your proximity to a cell site, the capacity of the cell site, the number of other users connected to the same cell site, the surrounding terrain, radio frequency interference, applicable network management practices, and the applications you use.
  • The table below sets forth data showing the actual download and upload speeds for AT&T’s mass market fixed wireless broadband Internet access service.

 

Download

Upload

Fixed Wireless Internet

10Mbps or over

1Mbps or over

  • Mobile Service. Most of AT&T’s mass market mobile broadband Internet access services do not impose maximum speed limits, and thus provide customers with the highest speed available from the network at a particular location and at a given point in time, subject to the factors and the network management practices that can affect network performance, discussed above. Certain service plans include maximum data transmission rates for video and/or other data traffic. For example, AT&T’s Unlimited Choice plan limits data transmission rates to 1.5Mbps for video and 3.0Mbps for other data traffic. Similarly, AT&T’s Unlimited Plus plan provides customers a monthly per line allotment of mobile hotspot/tethering usage without any data transmission rate limit. After an AT&T Unlimited Plus plan customer has consumed the tethering allotment for a particular line, the data transmission rate for tethered data for that device will be limited to a significantly slower speed (e.g., 128Kbps) for the remainder of the bill cycle, as set forth in the terms of the plan.
  • In no case does AT&T guarantee particular speeds for its mass market mobile broadband Internet access services. Speeds available are affected by many different factors that can impact wireless network performance as discussed above. Based on data compiled by AT&T through crowd-sourced speed tests, AT&T expects customers will typically experience the following speeds, subject to location, device, and other factors as discussed above (the range reported is from the 25th to the 75th percentile, which means that the 25th percentile lower bound is the value below which 25% of the test readings were, and the 75th percentile upper bound is the value below which 75% of the test readings were):


  • Technology

    Download (in Mbps)

    Upload (in Mbps)

    3G

    3 to 7

    .7 to 1

    4G

    2 to 7

    .4 to 1

    4G LTE

    6 to 29

    2 to 11

     

    Detailed download and upload speed performance by Cellular Market Area (CMA) can be found here.

  • Wi-Fi Service. AT&T's mass market Wi-Fi broadband Internet access service is designed to provide customers with the highest speed available from the network at any given point in time, subject to the many different factors discussed above that can affect network performance. AT&T's Wi-Fi services generally support the IEEE 802.11n/ac standard, with some AT&T locations also supporting the IEEE 802.11a/b/g standard. Although the IEEE 802.11 a/b/g/n/ac standards have theoretical maximum speeds ranging from over 10 Mbps to over a gigabit per second, actual Wi-Fi service speeds will be substantially lower than the theoretical maximum speeds which describe the physical throughput rate including Wi-Fi protocol communications; the result is that the theoretical maximum speed you can receive is 40%-50% of the quoted Wi-Fi standard speed. In addition to the factors discussed above, the actual speed you experience over Wi-Fi will depend in part on the speed of the connection between the Wi-Fi hotspot you are accessing and the destination you want to reach on the Internet, which may be significantly below the theoretical maximum speed of the service. For more information about AT&T's mass market Wi-Fi broadband Internet access services, please click here.

Latency

Latency, also known as delay, is the amount of time from when a data packet is sent to when it is received. For mass market broadband Internet access services, latency is usually expressed as the round-trip time in milliseconds (ms) that it takes for a data packet to travel between two end points on the Internet (from point A to point B and then back to point A). Some applications, such as email, can tolerate a substantial amount of latency without any noticeable impact on the application's performance. Other applications, such as real-time video conferencing, require lower latency to function properly. End-to-end latency reflects the cumulative effect of the individual latencies that occur along the end-to-end network path.

Although latencies can vary due to several factors, including some beyond AT&T's control, our mass market broadband Internet access service customers can typically expect the following round-trip latencies when accessing the Internet:

  • Wired Service:
    • The table below sets forth data showing the median, and ranges of, actual latency for AT&T’s mass market wired broadband Internet access services, by transport technology and speed tier. The range reported is from the 25th to the 75th percentile, which means that the 25th percentile lower bound is the value below which 25% of the test readings were, and the 75th percentile upper bound is the value below which 75% of the test readings were.
    • Unless a service tier is noted with an asterisk (*), the reported information comes from data compiled by the FCC’s MBA initiative between March 2016 and August 2016. For more information about the FCC’s MBA initiative, including how speeds are measured, go to www.fcc.gov/measuring-broadband-america.
    • Service tiers noted with an asterisk were not included in the FCC’s MBA initiative either because they are new products with limited availability or do not meet the program’s reporting requirements. Information included below for such service tiers comes from data compiled independently by AT&T using the same speed testing technology and methodology used in the FCC’s MBA initiative. The data for these tiers are based on limited sample sizes, and will be updated periodically. An entry of “N/A” signifies that reliable data are not available.

      Product Name Technology Latency(Ms)
      25th Percentile Median 75th Percentile
      FastAccess DSL Lite or High Speed Internet Basic or FastAccess Business DSL Lite ADSL 34.3 71.7 77.3
      Internet Basic 768 ADSL2+ 19.9 44.3 53.4
      FastAccess DSL Ultra or High Speed Internet Express or FastAccess Business DSL ADSL 28.5 56.6 50.9
      Internet Basic 1.5 or High Speed Internet Express ADSL2+ 33.2 107.2 97.4
      FastAccess DSL Xtreme or High Speed Internet Pro or FastAccess Business DSL Plus ADSL 25.3 48.7 45.2
      Internet Basic 3 ADSL2+ 20.2 40.0 42.6
      Internet Basic 3 VDSL2/GPON/BPON/EGPON 25.3 32.9 31.4
      Internet Basic 5 (5x1)* ADSL2+/VDSL2 23.6 23.7 23.9
      Internet Basic 5 (5x5)* GPON 39.5 45.2 51.2
      FastAccess DSL Xtreme 6.0 or High Speed Internet Elite or FastAccess Business DSL 6.0 ADSL 22.7 41.6 43.7
      Internet Basic 6 ADSL2+ 24.7 34.7 37.7
      Internet Basic 6 VDSL2/GPON/BPON/EGPON 24.2 35.3 37.6
      Internet 10 (10x1)* ADSL2+/VDSL2 28.7 29.2 29.3
      Internet 10 (10x10)* GPON 46.3 46.4 46.9
      Internet 12 ADSL2+ 24.5 32.7 33.9
      Internet 12 VDSL2/GPON/BPON/EGPON 25.6 34.4 38.6
      Internet 18 VDSL2/ADSL2+/GPON/BPON/EGPON 23.4 40.8 42.3
      Internet 24 VDSL2/ADSL2+/GPON 25.0 35.0 35.9
      Internet 25 (25x2)* ADSL2+ 18.6 33.3 51.7
      Internet 25 (25x5)* VDSL2 18.6 33.3 51.7
      Internet 25 (25x25) or Internet 25s* GPON 28.6 29.3 29.5
      Internet 45 VDSL2/GPON 28.4 37.2 31.2
      Internet 50 (50x10)* VDSL2 51.0 51.3 51.8
      Internet 50 (50x50) or Internet 50s* GPON 27.6 28.3 28.4
      Internet 75* (75x8)* VDSL2 53.9 56.1 57.9
      Internet 100 (100X20)* VDSL2 76.4 76.7 77.1
      Internet 100 or Internet 100s* GPON 30.4 49.5 65.6
      Internet 300 or Internet 300s* GPON 41.3 46.3 48.3
      Internet 1000 or Internet 1000s* GPON N/A N/A N/A
      Internet 200* GPON 30 32 33
      Internet 200s* GPON 29 30 32
      Internet 500* GPON 29 31 35
      Internet 500s* GPON 28 30 35
      DIRECTV Internet 100x100* ETHERNET 15.0 16.6 19.8
      DIRECTV Internet 20x5* ETHERNET 17.0 18.4 19.0
      DIRECTV Internet 10x1* ETHERNET 23.2 28.9 34.2
      DIRECTV Internet 6x2* ETHERNET 24.9 30.9 35.5
      DIRECTV Internet 3x2* ETHERNET 30.8 42.0 48.9
  • Fixed Wireless Service: The table below sets forth data showing the actual latency of AT&T’s mass market fixed wireless broadband Internet access service. Service performance may be affected by your proximity to a cell site, the capacity of the cell site, the number of other users connected to the same cell site, the surrounding terrain, radio frequency interference, applicable network management practices, and the applications you use.

     

    Latency

    Fixed Wireless Internet

    100ms or less

  • Mobile Service: Based on data compiled by AT&T through crowd-sourced performance tests, AT&T expects customers will typically experience the following latency, subject to location, device, and other factors as discussed above (the range reported is from the 25th to the 75th percentile, which means that the 25th percentile lower bound is the value below which 25% of the test readings were, and the 75th percentile upper bound is the value below which 75% of the test readings were):

    Technology

    Time in milliseconds

    3G

    78 to 116

    4G

    63 to 106

    4G LTE

    35 to 66


    Detailed latency performance by Cellular Market Area (CMA) can be found here.

  • Wi-Fi Service: approximately 10 to 250 milliseconds

Packet Loss

Packet loss occurs when one or more packets of data traveling across the network fail to reach their destination, typically due to network congestion, and is measured as a percentage of packets lost with respect to packets sent. A small percentage of packet loss is inevitable, and indeed desirable, in Internet protocol networks and applications. These networks and applications have been designed to tolerate dropped packets and rely on packet retransmission to replace such packets to maintain high speed transmission of data across the Internet. Without some packet loss, network (and thus application) performance could degrade significantly. Although packet loss can vary due to several factors, including some beyond AT&T's control, our mass market wired broadband Internet access service customers can typically expect the following end-to-end packet loss statistics when accessing the Internet:

  • Wired Service:
    • The table below sets forth the median actual packet loss for AT&T’s mass market wired broadband Internet access services, by transport technology and speed tier.
    • Unless a service tier is noted with an asterisk (*), the reported information comes from data compiled by the FCC’s MBA initiative between March 2016 and August 2016. For more information about the FCC’s MBA initiative, including how speeds are measured, go to www.fcc.gov/measuring-broadband-america.
    • Service tiers noted with an asterisk were not included in the FCC’s MBA initiative either because they are new products with limited availability or do not meet the program’s reporting requirements. Information included below for such service tiers comes from data compiled independently by AT&T using the same speed testing technology and methodology used in the FCC’s MBA initiative. The data for these tiers are based on limited sample sizes, and will be updated periodically. An entry of “N/A” signifies that reliable data are not available.

      Product Name Technology Packet Loss (%)
      Median
      FastAccess DSL Lite or High Speed Internet Basic or FastAccess Business DSL Lite ADSL 2.6
      Internet Basic 768 ADSL2+ 1.0
      FastAccess DSL Ultra or High Speed Internet Express or FastAccess Business DSL ADSL 2.0
      Internet Basic 1.5 or High Speed Internet Express ADSL2+ 2.1
      FastAccess DSL Xtreme or High Speed Internet Pro or FastAccess Business DSL Plus ADSL 1.9
      Internet Basic 3 ADSL2+ 1.9
      Internet Basic 3 VDSL2/GPON/BPON/EGPON 1.4
      Internet Basic 5 (5x1)* ADSL2+/VDSL2 0.3
      Internet Basic 5 (5x5)* GPON 0.3
      FastAccess DSL Xtreme 6.0 or High Speed Internet Elite or FastAccess Business DSL 6.0 ADSL 1.8
      Internet Basic 6 ADSL2+ 1.3
      Internet Basic 6 VDSL2/GPON/BPON/EGPON 1.5
      Internet 10 (10x1)* ADSL2+/VDSL2 0.2
      Internet 10 (10x10)* GPON 2.2
      Internet 12 ADSL2+ 1.0
      Internet 12 VDSL2/GPON/BPON/EGPON 1.7
      Internet 18 VDSL2/ADSL2+/GPON/BPON/EGPON 1.0
      Internet 24 VDSL2/ADSL2+/GPON 1.3
      Internet 25 (25x2)* ADSL2+ 0.8
      Internet 25 (25x5)* VDSL2 0.3
      Internet 25 (25x25) or Internet 25s* GPON 0.1
      Internet 45 VDSL2/GPON 1.5
      Internet 50 (50x10)* VDSL2 0.2
      Internet 50 (50x50) or Internet 50s* GPON 0.2
      Internet 75* (75x8)* VDSL2 0.5
      Internet 100 (100X20)* VDSL2 0.2
      Internet 100 or Internet 100s* GPON 0.3
      Internet 300 or Internet 300s* GPON 0.9
      Internet 1000 or Internet 1000s* GPON N/A
      Internet 200* GPON 0.11
      Internet 200s* GPON 0.05
      Internet 500* GPON 0.38
      Internet 500s* GPON 0.14
      DIRECTV Internet 100x100* ETHERNET 0.03
      DIRECTV Internet 20x5* ETHERNET 0.33
      DIRECTV Internet 10x1* ETHERNET 0.05
      DIRECTV Internet 6x2* ETHERNET 0.08
      DIRECTV Internet 3x2* ETHERNET 0.65
  • Fixed Wireless Service: The table below sets forth data showing the actual latency of AT&T’s mass market fixed wireless broadband Internet access service. Service performance may be affected by your proximity to a cell site, the capacity of the cell site, the number of other users connected to the same cell site, the surrounding terrain, radio frequency interference, applicable network management practices, and the applications you use.

     

    Packet Loss

    Fixed Wireless Internet

    2.3% or less

Commercial Terms

Where can I find the prices and other fees that apply to the AT&T mass market broadband Internet access services?

Descriptions of the prices and fees applicable to the AT&T mass market broadband Internet access services are available on the AT&T website. For more information, please see the following:

Rates and Data Plan Pricing Information

Early Termination Fees

Where can I find the Terms of Service and the Acceptable Use Policy that apply to the AT&T mass market broadband Internet access services?

The Terms of Service and Acceptable Use Policy applicable to the AT&T mass market broadband Internet access services are available on the AT&T website at the following links:

Terms of Service

Acceptable Use Policy

Does AT&T have a privacy policy for its mass market broadband Internet access services?

Yes. At AT&T, we take our customers' privacy very seriously. We have a comprehensive Privacy Policy that applies to all uses of AT&T products and services. This Privacy Policy identifies and describes the way AT&T uses and protects the information we collect about customers and users. You can view the AT&T Privacy Policy at www.att.com/privacy.

Where can I get assistance if I have a concern or need more information about my AT&T broadband Internet access service?

If you have questions or concerns about your mass market AT&T broadband Internet access service, please contact us at www.att.com/econtactus.

Where can application developers and device manufacturers get more information about developing applications or devices for use on the AT&T mobile network?

If you are an application developer or device manufacturer, AT&T has a wide range of tools and resources available to help you design, test, and market your applications or devices. Please click here to visit our website for application developers, and click here to visit our website for device manufacturers.

Where can I get assistance if I have a concern or need more information about peering with AT&T?

If you have questions about peering with AT&T, please contact us at http://www.corp.att.com/peering.

Last updated: April 24, 2017.