Who Called Me from Area Code 645?
- No voicemail? Let it go. Real callers leave messages.
- Recognize the pattern? Check the number in the prefix lookup.
- Getting repeats? ActiveArmor® blocks and labels them automatically.
- Same prefix calling again? Compare it against this month’s most-reported 645 prefixes, right on this page.
- Curious who issued a number? Every 645 prefix belongs to a carrier — the registry names it.
36 unwanted-call reports naming 645 numbers in FTC Do Not Call complaint data, July 2–17, 2026. Consumer-reported and unverified.
Block spam calls in the 645, included with AT&T wireless
AT&T ActiveArmor® is the network-level security that screens the calls this page is about:
- Fraud calls blocked automatically on the network
- Suspected spam labeled before you answer
- Caller ID & custom call blocking in the free app
- Reverse number lookup (available with ActiveArmor Advanced security. Fee required.)
- Identity monitoring & identity theft insurance (available with ActiveArmor Advanced security. Fee required.)
Included with AT&T wireless plans. Requires compatible device/service and download of the AT&T ActiveArmor® app. Other terms & restrictions apply. May not detect all threats and may block wanted calls. Some features require Advanced mobile security ($7/mo.). See terms.
See how ActiveArmor worksIncluded with the free 30-day AT&T Wireless℠ trial- 100GB of data plus 25GB hotspot
- Unlimited talk & text in the U.S., Canada and Mexico
- Texting from the U.S. to 200+ countries & territories
- Access to the AT&T 5G network
Offer details
Service good for 30 days. Data: Limited to 100GB of data and 25GB of hotspot data. No additional data is available after limit is reached. Video is limited to SD quality. Talk & Text: Includes unlimited talk & text within the U.S. and unlimited text from the U.S. to over 230 countries. Limits: One trial per user. An unlocked, dual eSIM iPhone is required. You’ll receive a trial phone number that belongs to AT&T and is not available to be ported to another carrier or otherwise retained. Trial plan features and details may differ from or be unavailable in other AT&T plans. U.S. only. All terms subject to change at any time.
Is Area Code 645 a Scam?
It’s added to the 305 region in 2023 and serves Miami and surrounding communities. But legitimacy of the code says nothing about any single call. Scammers spoof local numbers constantly.
Been targeted? Report it to the FTC at reportfraud.ftc.gov. Reports feed the complaint data that powers spam blocking.
Scam texts from area code 645 numbers
The most common area code 645 text scam is the “wrong number” opener: a friendly message that pretends to know you, then moves the chat to WhatsApp and eventually to an investment pitch. Scripts currently circulating:
- “U at home?” · “Are you busy tomorrow?” · “How are you doing?”
- Delivery-problem and job-offer texts that link out to a login page
Don’t reply. A response marks your number as live. Forward scam texts to 7726 (SPAM), and AT&T ActiveArmor® filters known senders automatically.
How number spoofing works in area code 645
Caller ID is easy to forge. Spoofing fakes the number a call displays. The real owner of that 645 number isn’t involved and usually has no idea. That’s why blocking one number rarely stops the calls.
- A call from a number almost identical to yours (same 645 and prefix) is “mirror spoofing.” A missed call from your own number is never worth returning.
- Strangers calling you back saying you called them? Your 645 number is being spoofed. It typically passes within days, and you don’t need a new number. Report it at reportfraud.ftc.gov.
- The caller-ID checkmark: AT&T verifies network calls (STIR/SHAKEN). A verified mark means the displayed number wasn’t faked. No mark doesn’t always mean scam, but treat it with more caution.
Spoofed or not, the rule holds: unexpected caller, no voicemail? Let it go.
645 Area Code Prefix & Carrier Lookup
The three digits after the area code identify the carrier a number was issued to. All 75 assigned 645 prefixes below are real, from the public numbering registry. Type to filter.
This isn’t a reverse phone lookup: no legitimate free service can tell you who owns a specific number. What a 645 prefix does show: the carrier that issued it, whether it’s wireless, landline or VoIP, and the community it belongs to, which is often enough to judge whether a call was worth returning.
| Prefix | Carrier | Line type |
|---|---|---|
| 645-200 | AT&T Mobility | Wireless |
| 645-201 | Verizon Wireless | Wireless |
| 645-202 | Onvoy (Sinch) | VoIP |
| 645-203 | Eon Telecom | Landline |
| 645-204 | AT&T (Teleport Communications) | Landline |
| 645-205 | Onvoy (Sinch) | VoIP |
| 645-206 | AT&T Mobility | Wireless |
| 645-207 | AT&T Mobility | Wireless |
| 645-208 | AT&T (Teleport Communications) | Landline |
| 645-209 | Eon Telecom | Landline |
| 645-210 | Eon Telecom | Landline |
| 645-212 | Eon Telecom | Landline |
| 645-213 | Eon Telecom | Landline |
| 645-214 | AT&T Mobility | Wireless |
| 645-215 | Onvoy (Sinch) | VoIP |
| 645-216 | Verizon Wireless | Wireless |
| 645-217 | AT&T Mobility | Wireless |
| 645-218 | Onvoy (Sinch) | VoIP |
| 645-219 | Boost Mobile | Landline |
| 645-220 | Onvoy (Sinch) | VoIP |
| 645-221 | AT&T Mobility | Wireless |
| 645-222 | Wide Voice | Landline |
| 645-223 | Boost Mobile | Landline |
| 645-224 | AT&T Mobility | Wireless |
| 645-225 | Onvoy (Sinch) | VoIP |
| 645-226 | Shelcomm | Landline |
| 645-227 | Shelcomm | Landline |
| 645-228 | Bandwidth.com | VoIP |
| 645-229 | Verizon Wireless | Wireless |
| 645-230 | Onvoy (Sinch) | VoIP |
| 645-231 | Onvoy (Sinch) | VoIP |
| 645-232 | T-Mobile (Omnipoint) | Landline |
| 645-233 | Onvoy (Sinch) | VoIP |
| 645-234 | AT&T Mobility | Wireless |
| 645-235 | T-Mobile (Omnipoint) | Landline |
| 645-236 | T-Mobile (Omnipoint) | Landline |
| 645-237 | T-Mobile (Omnipoint) | Landline |
| 645-238 | Onvoy (Sinch) | VoIP |
| 645-239 | AT&T Mobility | Wireless |
| 645-240 | AT&T Mobility | Wireless |
| 645-241 | T-Mobile (Omnipoint) | Landline |
| 645-242 | AT&T Mobility | Wireless |
| 645-243 | AT&T Mobility | Wireless |
| 645-244 | Ip Horizon | Landline |
| 645-245 | Ip Horizon | Landline |
| 645-246 | Ip Horizon | Landline |
| 645-247 | Ip Horizon | Landline |
| 645-248 | AT&T Mobility | Wireless |
| 645-249 | Ip Horizon | Landline |
| 645-250 | AT&T Mobility | Wireless |
| 645-251 | Wavenation | Landline |
| 645-252 | AT&T Mobility | Wireless |
| 645-253 | TPx Communications | Landline |
| 645-254 | AT&T Mobility | Wireless |
| 645-255 | AT&T Mobility | Wireless |
| 645-300 | Terra Nova Telecom | Landline |
| 645-333 | Wide Voice | Landline |
| 645-400 | Livewire Telecom | Landline |
| 645-444 | Wide Voice | Landline |
| 645-465 | Livewire Telecom | Landline |
| 645-500 | Onvoy Spectrum (Sinch) | VoIP |
| 645-529 | Onvoy (Sinch) | VoIP |
| 645-587 | Opentact | Landline |
| 645-600 | Livewire Telecom | Landline |
| 645-645 | Onvoy (Sinch) | VoIP |
| 645-654 | Onvoy Spectrum (Sinch) | VoIP |
| 645-666 | Wide Voice | Landline |
| 645-678 | Onvoy Spectrum (Sinch) | VoIP |
| 645-732 | Onvoy (Sinch) | VoIP |
| 645-777 | Wide Voice | Landline |
| 645-800 | Wide Voice | Landline |
| 645-888 | Wide Voice | Landline |
| 645-900 | Wide Voice | Landline |
| 645-933 | Ahoi | Landline |
| 645-999 | Wide Voice | Landline |
Line type reflects the registry assignment; ported numbers can differ. Unknown 645 number calling? ActiveArmor® screens it before you ever look it up.
Cities & Communities in and around Area Code 645
Communities the 645 serves, filtered against the numbering registry’s rate centers, with each community’s key ZIP codes and the AT&T home internet available there. Cities link to their local AT&T internet page.
| City / community | Key ZIP codes | AT&T internet |
|---|---|---|
| Aventura | 33180, 33009, 33160 | Fiber up to 5 GIG |
| Bal Harbour | 33154, 33181, 33160 | Fiber up to 5 GIG |
| Bay Harbor Islands | 33154, 33181, 33141 | Fiber up to 5 GIG |
| Big Pine Key | 33043 | Fiber up to 5 GIG |
| Biscayne Park | 33161, 33168, 33138 | Fiber up to 5 GIG |
| Cooper City | 33026, 33328, 33024 | Fiber up to 5 GIG |
| Coral Gables | 33156, 33143, 33146 | Fiber up to 5 GIG |
| Cudjoe Key | 33042 | Fiber up to 5 GIG |
| Cutler Bay | 33189, 33190, 33157 | Fiber up to 5 GIG |
| Davie | 33328, 33324, 33388 | Fiber up to 5 GIG |
| Doral | 33172, 33122, 33166 | Fiber up to 5 GIG |
| Duck Key | 33050, 33051 | Fiber up to 5 GIG |
| El Portal | 33150, 33138, 33147 | Fiber up to 5 GIG |
| Florida City | 33030, 33033, 33035 | Fiber up to 5 GIG |
| Golden Beach | 33180, 33009, 33160 | Fiber up to 5 GIG |
| Goulds | 33032, 33190, 33177 | Fiber up to 5 GIG |
| Hallandale Beach | 33009, 33180, 33022 | Fiber up to 5 GIG |
| Hialeah | 33012, 33013, 33016 | Fiber up to 5 GIG |
| Hialeah Gardens | 33016, 33018, 33014 | Fiber up to 5 GIG |
| Hollywood | 33020, 33021, 33022 | Fiber up to 5 GIG |
| Homestead | 33033, 33039, 33030 | Fiber up to 5 GIG |
| Kendall | 33176, 33173, 33158 | Fiber up to 5 GIG |
| Key Biscayne | 33149, 33129, 33133 | Fiber up to 5 GIG |
| Key Colony Beach | 33051, 33050 | Fiber up to 5 GIG |
| Key Largo | 33037 | Fiber up to 5 GIG |
| Key West | 33040 | Fiber up to 5 GIG |
| Marathon | 33051, 33050 | Fiber up to 5 GIG |
| Medley | 33016, 33012, 33018 | Fiber up to 5 GIG |
| Miami | 33128, 33130, 33101 | Fiber up to 5 GIG |
| Miami Beach | 33140, 33137, 33139 | Fiber up to 5 GIG |
| Miami Gardens | 33056, 33169, 33055 | Fiber up to 5 GIG |
| Miami Lakes | 33014, 33016, 33015 | Fiber up to 5 GIG |
| Miami Shores | 33138, 33161, 33150 | Fiber up to 5 GIG |
| Miami Springs | 33010, 33166, 33122 | Fiber up to 5 GIG |
| Miramar | 33027, 33015, 33028 | Fiber up to 5 GIG |
| Naranja | 33039, 33032, 33033 | Fiber up to 5 GIG |
| North Bay Village | 33141, 33138, 33140 | Fiber up to 5 GIG |
| North Miami | 33161, 33181, 33162 | Fiber up to 5 GIG |
| North Miami Beach | 33162, 33160, 33179 | Fiber up to 5 GIG |
| Olympia Heights | 33165, 33155, 33173 | Fiber up to 5 GIG |
| Opa Locka | — | Fiber up to 5 GIG |
| Palmetto Bay | 33158, 33157, 33156 | Fiber up to 5 GIG |
| Pembroke Park | 33023, 33179, 33009 | Fiber up to 5 GIG |
| Pembroke Pines | 33028, 33027, 33026 | Fiber up to 5 GIG |
| Princeton | 33032, 33039, 33190 | Fiber up to 5 GIG |
| South Miami | 33143, 33146, 33155 | Fiber up to 5 GIG |
| Sunny Isles Beach | 33160, 33180, 33181 | Fiber up to 5 GIG |
| Surfside | 33154, 33181, 33141 | Fiber up to 5 GIG |
| Tavernier | 33070 | Fiber up to 5 GIG |
| Virginia Gardens | 33122, 33166, 33010 | Fiber up to 5 GIG |
| West Miami | 33144, 33126, 33155 | Fiber up to 5 GIG |
| West Park | 33179, 33023, 33009 | Fiber up to 5 GIG |
City list: AT&T service-area records and the public numbering registry. Key ZIPs: U.S. Census data for each community. Internet type: AT&T eligibility data, June 2026. Availability is always confirmed at your exact address.
645 Area Code Map
Area code 645 serves Miami and nearby communities in FL.
↓ Printable PDF
Open the printable 645 map (PDF) · All Florida area codes · Home internet in Miami
Counties Covered by the 645 Area Code
Counties are served in whole or in part; population is U.S. Census Bureau ACS 2023.
Area Code 645: More Than a Number in Miami
In Miami, the 645 is more than digits on a caller ID. It arrived in 2023, layered onto the 305 region, and it has meant Miami and surrounding communities ever since — 75 carrier prefixes keep its lines busy today, and an established 645 number still says you’ve been here a while.
The map tells its own story: Miami and surrounding communities, with 305 and 786 sharing the same streets today. Several codes, one local calling area, no long-distance between any of them — only the 645 came first.
Keeping a 645 matters here. An existing 645 number ports to a new phone, a new carrier, or a new AT&T line, and stays yours anywhere in the U.S. New lines in the area often draw 305 instead — one more reason locals hold on to theirs.
Need a new local number? Shop plans Keep your 645: bring it to AT&TInternet, wireless & stores in the 645
AT&T Home Internet in Area Code 645
AT&T home internet serves communities across area code 645, with AT&T Fiber where it’s built and AT&T Internet Air covering the gaps. Availability is decided address by address; every community in the table above links to its local internet page.
AT&T Fiber: Ltd. avail/areas. Speeds based on wired connection. Actual speeds vary. For 5-GIG, single device wired speed maximum 4.7Gbps. For more info., visit att.com/speed101. AT&T Internet Air: AT&T Internet Air not available in all areas. In rare cases, if your usage is contributing to congestion on the network, AT&T will greatly reduce your speed for a minimum of 30 min.
Pair it with wireless in an internet + wireless bundle. Run a business in the 645? AT&T Business Internet is available at many addresses.
Moving to Area Code 645?
Set up home internet in area code 645 before the boxes arrive, and find your new community in the table above or check your exact address below.
Your number moves with you: port your 645 number from anywhere, or keep your old number when you arrive. An AT&T store nearby can handle the whole switch in one visit.
AT&T Wireless in Area Code 645
AT&T’s 5G network covers most of area code 645. ActiveArmor® spam blocking is included with every unlimited plan, your 645 number stays yours, and great cell phone deals in Miami are a tap away.
AT&T may temporarily slow data speeds if the network is busy. 5G req’s compatible plan & device. Coverage not available everywhere. Learn more at att.com/5Gforyou.
Need a new 645 number? Ask when you activate a line: the 645 shares its territory with 305 and 786, so new lines may draw one of those codes, and porting an existing 645 number keeps it yours.
AT&T Stores in Area Code 645
Looking for cell phone stores in area code 645? These stores serve the 645 area — walk in for switching, porting, upgrades and hands-on help. (The 645 is new enough that most local stores still answer on longer-established numbers.)
Every AT&T store in the region, company owned and authorized retailer alike, each with its own store page.
All AT&T Stores Serving the 645 Area
Every AT&T store serving the 645’s communities. Tap any number to call.
International Calling from Area Code 645
Calling abroad from area code 645? AT&T International Calling adds discounted or unlimited rates to 200+ countries on top of your existing plan, and unlimited texting from the U.S. to 200+ destinations is already included on AT&T unlimited plans.
Top places of birth among foreign-born residents of the 645’s counties, U.S. Census Bureau ACS 2023.
Calling abroad from a 645 number: dial 011 + country code + number (or just + on a mobile). Traveling abroad instead? International Day Pass® takes your talk, text and data with you for a flat daily rate.
International Calling and International Day Pass® availability, rates and included destinations vary by plan; see att.com for the current country list.
645 Area Code Quick Facts & Dialing
How to dial a 645 number
| Scenario | Format | Example |
|---|---|---|
| Local call (within the region) | 645 + 7-digit number | (645) 555-0100 |
| Long distance (within the U.S.) | 1 + 645 + 7-digit number | 1 (645) 555-0100 |
| Calling 645 from another country | +1 645 + 7-digit number | +1 645 555 0100 |
| From a mobile phone | (645) + 7-digit number | (645) 555-0100 |
A Short History of Area Code 645
Added in 2023 to the 305 region, the 645 serves Miami and surrounding communities. No splits or overlays have divided its territory since.
In service since 2023. Today the 645’s territory is shared with overlay codes 305 and 786, so ten-digit dialing is required.
Nearby & Related Area Codes
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