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California · Pacific Time  Updated July 2026

Area Code 661

Lancaster and surrounding communities

Area code 661 serves Lancaster, California and communities including Acton, Aerial Acres, Agua Dulce and more. Every city it covers is listed below, with who-called help, the live local time and the full prefix registry.

Getting calls from a 661 number? The code is legit, but spoofing is common. Look up the prefix ›
StateCalifornia
Largest cityLancaster
Local time1:40 AM PT
Nearby805 · 818 · 310
Since1999
Call now?Late in Lancaster. Consider texting

Who Called Me from Area Code 661?

Quick answerA 661 call usually comes from Lancaster or nearby communities, but caller ID can be spoofed, so a local-looking number isn’t proof. If there’s no voicemail, let it go: legitimate callers leave messages.
  • 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 661 prefixes, right on this page.
  • Curious who issued a number? Every 661 prefix belongs to a carrier — the registry names it.
Been targeted?Report the call at reportfraud.ftc.gov — reports feed the complaint data that powers spam blocking, including the board on this page. AT&T customers already have ActiveArmor® screening built in.
Most-reported 661 prefixes this month
PrefixReported patternReport volume
(661) 454-XXXXRobocall-heavy
(661) 245-XXXXRobocall-heavy
(661) 731-XXXXRobocall-heavy
(661) 446-XXXXRobocall-heavy
(661) 516-XXXXRobocall-heavy

228 unwanted-call reports naming 661 numbers in FTC Do Not Call complaint data, July 2–17, 2026. Consumer-reported and unverified.

Block spam calls in the 661, 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
Try AT&T Wireless℠ free for 30 daysDownload the AT&T app, activate a trial eSIM in minutes, and run our network side by side with your current service. No credit card, keep your number.
  • 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
Start your free trialCompatible iPhone required. 5G requires a compatible plan and device; coverage not available everywhere. Terms & restrictions apply.
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 661 a Scam?

No. 661 is a legitimate Lancaster area code.

It’s carved from the 805 in 1999 and serves Lancaster and surrounding communities. But legitimacy of the code says nothing about any single call. Scammers spoof local numbers constantly.

The code is realSplit from the 805 in 1999; 672 assigned carrier prefixes serve it today.
Spoofing happens“Neighbor spoofing” fakes local numbers. No voicemail? Let it go.
Screening includedActiveArmor® labels and blocks suspected spam. Included with AT&T wireless plans.

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 661 numbers

The most common area code 661 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 661

Caller ID is easy to forge. Spoofing fakes the number a call displays. The real owner of that 661 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 661 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 661 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.

661 Area Code Prefix & Carrier Lookup

The three digits after the area code identify the carrier a number was issued to. All 672 assigned 661 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 661 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.

672 prefixes · updated monthly
PrefixCarrierLine type
661-200Pacific BellLandline
661-201T-MobileWireless
661-202Lumen (Level 3)VoIP
661-203Verizon WirelessWireless
661-204AT&T MobilityWireless
661-205AT&T MobilityWireless
661-206Windstream (Paetec)Landline
661-207Utility Telecom GroupLandline
661-208Verizon WirelessWireless
661-209Metro by T-Mobile (MetroPCS)Wireless
661-210AT&T MobilityWireless
661-212Metro by T-Mobile (MetroPCS)Wireless
661-213Metro by T-Mobile (MetroPCS)Wireless
661-214Lumen (Level 3)VoIP
661-215Onvoy (Sinch)VoIP
661-216American Messaging (paging)Landline
661-217American Messaging (paging)Landline
661-218Bhn Ip Enabled ServicesLandline
661-219Verizon Business (MCImetro)Landline
661-220T-MobileWireless
661-221T-MobileWireless
661-222Pacific BellLandline
661-223Pacific BellLandline
661-224Pacific BellLandline
661-225Pacific BellLandline
661-226American Messaging (paging)Landline
661-227Metro by T-Mobile (MetroPCS)Wireless
661-228Onvoy (Sinch)VoIP
661-229AT&T MobilityWireless
661-230Bandwidth.comVoIP
661-231Bandwidth.comVoIP
661-232T-MobileWireless
661-233Pacific BellLandline
661-234T-MobileWireless
661-235Bandwidth.comVoIP
661-236Pacific BellLandline
661-237Bandwidth.comVoIP
661-238Bandwidth.comVoIP
661-239Bandwidth.comVoIP
661-240Ip HorizonLandline
661-241Bandwidth.comVoIP
661-242Pacific BellLandline
661-243Bandwidth.comVoIP
661-244Onvoy (Sinch)VoIP
661-245Pacific BellLandline
661-246AT&T MobilityWireless
661-247T-MobileWireless
661-248Pacific BellLandline
661-249Bandwidth.comVoIP
661-250Pacific BellLandline
661-251Pacific BellLandline
661-252Pacific BellLandline
661-253Pacific BellLandline
661-254Pacific BellLandline
661-255Pacific BellLandline
661-256Pacific BellLandline
661-257Pacific BellLandline
661-258Pacific BellLandline
661-259Pacific BellLandline
661-260Pacific BellLandline
661-261Pacific BellLandline
661-262Ip HorizonLandline
661-263Pacific BellLandline
661-264Pacific BellLandline
661-265Pacific BellLandline
661-266Pacific BellLandline
661-267Pacific BellLandline
661-268Pacific BellLandline
661-269Pacific BellLandline
661-270Pacific BellLandline
661-271Lumen (Level 3)VoIP
661-272Pacific BellLandline
661-273Pacific BellLandline
661-274Pacific BellLandline
661-275Pacific BellLandline
661-276Pacific BellLandline
661-277Pacific BellLandline
661-278Lumen (Level 3)VoIP
661-279Lumen (Level 3)VoIP
661-280Utility Telecom GroupLandline
661-281Verizon Business (MCImetro)Landline
661-282Verizon Business (MCImetro)Landline
661-283Verizon Business (MCImetro)Landline
661-284Pacific BellLandline
661-285Pacific BellLandline
661-286Pacific BellLandline
661-287Pacific BellLandline
661-288Pacific BellLandline
661-289AT&T MobilityWireless
661-290Pacific BellLandline
661-291Pacific BellLandline
661-292T-MobileWireless
661-293T-MobileWireless
661-294Pacific BellLandline
661-295Pacific BellLandline
661-296Pacific BellLandline
661-297Pacific BellLandline
661-298Pacific BellLandline
661-299Pacific BellLandline
661-300T-MobileWireless
661-301AT&T MobilityWireless
661-302Lumen (Level 3)VoIP
661-303AT&T MobilityWireless
661-304AT&T MobilityWireless
661-305Verizon WirelessWireless
661-306Lumen (Level 3)VoIP
661-307American Messaging (paging)Landline
661-308Csc WirelessWireless
661-309Verizon Business (MCImetro)Landline
661-310Lumen (Level 3)VoIP
661-312Metro by T-Mobile (MetroPCS)Wireless
661-313Metro by T-Mobile (MetroPCS)Wireless
661-314T-MobileWireless
661-315AT&T MobilityWireless
661-316Verizon Business (MCImetro)Landline
661-317T-MobileWireless
661-31833 WirelessWireless
661-319AT&T MobilityWireless
661-320Lumen (Level 3)VoIP
661-321Pacific BellLandline
661-322Pacific BellLandline
661-323Pacific BellLandline
661-324Pacific BellLandline
661-325Pacific BellLandline
661-326Pacific BellLandline
661-327Pacific BellLandline
661-328Pacific BellLandline
661-329Spok (paging)Landline
661-330AT&T MobilityWireless
661-331AT&T MobilityWireless
661-332AT&T MobilityWireless
661-333AT&T MobilityWireless
661-334Pacific BellLandline
661-335Pacific BellLandline
661-336Pacific BellLandline
661-337Pacific BellLandline
661-338Lumen (Level 3)VoIP
661-339Lumen (Level 3)VoIP
661-340AT&T MobilityWireless
661-341AT&T LocalLandline
661-342Verizon WirelessWireless
661-343Metro by T-Mobile (MetroPCS)Wireless
661-344Metro by T-Mobile (MetroPCS)Wireless
661-345AT&T MobilityWireless
661-346Metro by T-Mobile (MetroPCS)Wireless
661-347Lumen (Level 3)VoIP
661-348Bhn Ip Enabled ServicesLandline
661-349Lumen (Level 3)VoIP
661-350AT&T MobilityWireless
661-351Utility Telecom GroupLandline
661-352Utility Telecom GroupLandline
661-353Utility Telecom GroupLandline
661-354Utility Telecom GroupLandline
661-355Utility Telecom GroupLandline
661-356Utility Telecom GroupLandline
661-357Utility Telecom GroupLandline
661-358Utility Telecom GroupLandline
661-359Utility Telecom GroupLandline
661-360AT&T MobilityWireless
661-361Windstream (Paetec)Landline
661-362Windstream (Paetec)Landline
661-363Pacific BellLandline
661-364Pacific BellLandline
661-365T-MobileWireless
661-366Pacific BellLandline
661-367Windstream (Paetec)Landline
661-368AT&T (Teleport Communications)Landline
661-369Verizon WirelessWireless
661-370Lumen (Level 3)VoIP
661-371Onvoy (Sinch)VoIP
661-372Bandwidth.comVoIP
661-373T-MobileWireless
661-374Onvoy (Sinch)VoIP
661-375Verizon WirelessWireless
661-376Bandwidth.comVoIP
661-377TPx CommunicationsLandline
661-378Onvoy (Sinch)VoIP
661-379Bandwidth.comVoIP
661-380Race TelecommunicationsLandline
661-381TPx CommunicationsLandline
661-382Bandwidth.comVoIP
661-383Pacific BellLandline
661-384Onvoy (Sinch)VoIP
661-385AT&T (Teleport Communications)Landline
661-386Spectrum (Charter IP)Landline
661-387Pacific BellLandline
661-388Spectrum (TWC IP)Landline
661-389AT&T MobilityWireless
661-390TPx CommunicationsLandline
661-391Pacific BellLandline
661-392Pacific BellLandline
661-393Pacific BellLandline
661-394Pacific BellLandline
661-395Pacific BellLandline
661-396Pacific BellLandline
661-397Pacific BellLandline
661-398Pacific BellLandline
661-399Pacific BellLandline
661-400AT&T MobilityWireless
661-401Verizon WirelessWireless
661-402Metro by T-Mobile (MetroPCS)Wireless
661-403T-MobileWireless
661-404TelnyxLandline
661-405AT&T MobilityWireless
661-406AT&T MobilityWireless
661-407Terra Nova TelecomLandline
661-409Metro by T-Mobile (MetroPCS)Wireless
661-410TPx CommunicationsLandline
661-412At&T EnterprisesLandline
661-413Bandwidth.comVoIP
661-414Lumen (Level 3)VoIP
661-416T-MobileWireless
661-417Metro by T-Mobile (MetroPCS)Wireless
661-418T-MobileWireless
661-419ShelcommLandline
661-420Lumen (Level 3)VoIP
661-421T-MobileWireless
661-422Bandwidth.comVoIP
661-423Frontier CommunicationsLandline
661-424Pacific BellLandline
661-425Bandwidth.comVoIP
661-426Onvoy (Sinch)VoIP
661-427Metro by T-Mobile (MetroPCS)Wireless
661-428Verizon WirelessWireless
661-429T-MobileWireless
661-430Lumen (Level 3)VoIP
661-431TPx CommunicationsLandline
661-432Verizon WirelessWireless
661-433Verizon WirelessWireless
661-434Verizon WirelessWireless
661-435AT&T MobilityWireless
661-436At&T EnterprisesLandline
661-437Metro by T-Mobile (MetroPCS)Wireless
661-438Lumen (Level 3)VoIP
661-439Metro by T-Mobile (MetroPCS)Wireless
661-440Metro by T-Mobile (MetroPCS)Wireless
661-441Lumen (CenturyLink)Landline
661-442ShelcommLandline
661-443Onvoy (Sinch)VoIP
661-444T-MobileWireless
661-445T-MobileWireless
661-446AT&T (Teleport Communications)Landline
661-447T-MobileWireless
661-448NusoLandline
661-449Onvoy (Sinch)VoIP
661-450Lumen (Level 3)VoIP
661-451Onvoy (Sinch)VoIP
661-452TelnyxLandline
661-453Lumen (Level 3)VoIP
661-454Bhn Ip Enabled ServicesLandline
661-455Lumen (Level 3)VoIP
661-456Lumen (Level 3)VoIP
661-457Terra Nova TelecomLandline
661-458Lumen (Level 3)VoIP
661-459Onvoy (Sinch)VoIP
661-460Lumen (Level 3)VoIP
661-461Lumen (Level 3)VoIP
661-462Onvoy (Sinch)VoIP
661-463Onvoy (Sinch)VoIP
661-464Onvoy (Sinch)VoIP
661-465Frontier CommunicationsLandline
661-466Onvoy (Sinch)VoIP
661-467Onvoy (Sinch)VoIP
661-468Ip HorizonLandline
661-469Bhn Ip Enabled ServicesLandline
661-470AT&T MobilityWireless
661-471Lumen (CenturyLink)Landline
661-472T-MobileWireless
661-473Bandwidth.comVoIP
661-474Verizon WirelessWireless
661-475Onvoy (Sinch)VoIP
661-476Verizon WirelessWireless
661-477Verizon WirelessWireless
661-478Verizon WirelessWireless
661-479Peerless NetworkVoIP
661-480Verizon Business (MCImetro)Landline
661-481Peerless NetworkVoIP
661-482Spectrum (TWC IP)Landline
661-483Verizon WirelessWireless
661-484Verizon WirelessWireless
661-485Metro by T-Mobile (MetroPCS)Wireless
661-486Metro by T-Mobile (MetroPCS)Wireless
661-487AT&T MobilityWireless
661-488T-MobileWireless
661-489Bandwidth.comVoIP
661-490Metro by T-Mobile (MetroPCS)Wireless
661-491Bandwidth.comVoIP
661-492T-MobileWireless
661-493TPx CommunicationsLandline
661-494AT&T MobilityWireless
661-495Onvoy (Sinch)VoIP
661-496AT&T MobilityWireless
661-497Metro by T-Mobile (MetroPCS)Wireless
661-498VonageVoIP
661-499AirespringLandline
661-500Verizon WirelessWireless
661-501Bhn Ip Enabled ServicesLandline
661-502Metro by T-Mobile (MetroPCS)Wireless
661-503T-MobileWireless
661-504AT&T MobilityWireless
661-505Lumen (Level 3)VoIP
661-506AT&T MobilityWireless
661-507AT&T MobilityWireless
661-508AT&T MobilityWireless
661-509Bandwidth.comVoIP
661-510Metro by T-Mobile (MetroPCS)Wireless
661-512Metro by T-Mobile (MetroPCS)Wireless
661-513Pacific BellLandline
661-514AT&T MobilityWireless
661-515Bandwidth.comVoIP
661-516Hd CarrierLandline
661-517Onvoy (Sinch)VoIP
661-518TelnyxLandline
661-519T-MobileWireless
661-520Peerless NetworkVoIP
661-521AT&T MobilityWireless
661-522Bandwidth.comVoIP
661-523AT&T MobilityWireless
661-524Lumen (Level 3)VoIP
661-525Lumen (Level 3)VoIP
661-526At&T EnterprisesLandline
661-527Bandwidth.comVoIP
661-528Lumen (Level 3)VoIP
661-529Onvoy (Sinch)VoIP
661-531T-MobileWireless
661-532Ip HorizonLandline
661-533Pacific BellLandline
661-534Lumen (CenturyLink)Landline
661-535AT&T MobilityWireless
661-536Frontier CommunicationsLandline
661-537Pacific BellLandline
661-538Pacific BellLandline
661-539Onvoy Spectrum (Sinch)VoIP
661-540Pacific BellLandline
661-541Verizon WirelessWireless
661-542Onvoy (Sinch)VoIP
661-543AT&T MobilityWireless
661-544Metro by T-Mobile (MetroPCS)Wireless
661-545T-MobileWireless
661-546Lumen (CenturyLink)Landline
661-547T-MobileWireless
661-548Frontier CommunicationsLandline
661-549AT&T MobilityWireless
661-550Bandwidth.comVoIP
661-551Onvoy (Sinch)VoIP
661-552Ip HorizonLandline
661-553Bandwidth.comVoIP
661-554Onvoy (Sinch)VoIP
661-556Verizon WirelessWireless
661-557Verizon WirelessWireless
661-558Onvoy (Sinch)VoIP
661-560TwilioVoIP
661-561Onvoy (Sinch)VoIP
661-563Metro by T-Mobile (MetroPCS)Wireless
661-564Verizon Business (MCImetro)Landline
661-565AT&T (Teleport Communications)Landline
661-566T-MobileWireless
661-567Bandwidth.comVoIP
661-568AT&T (Teleport Communications)Landline
661-569T-MobileWireless
661-570Verizon WirelessWireless
661-571Verizon WirelessWireless
661-572Pacific BellLandline
661-573AT&T MobilityWireless
661-574Pacific BellLandline
661-575Pacific BellLandline
661-576T-MobileWireless
661-577Metro by T-Mobile (MetroPCS)Wireless
661-578Lumen (Level 3)VoIP
661-579Onvoy (Sinch)VoIP
661-580AT&T MobilityWireless
661-581AT&T (Teleport Communications)Landline
661-582AT&T MobilityWireless
661-583AT&T MobilityWireless
661-584Lumen (Level 3)VoIP
661-585AT&T MobilityWireless
661-586AT&T MobilityWireless
661-587Pacific BellLandline
661-588Pacific BellLandline
661-589Pacific BellLandline
661-590TPx CommunicationsLandline
661-591Lumen (Level 3)VoIP
661-592Metro by T-Mobile (MetroPCS)Wireless
661-593T-MobileWireless
661-594T-MobileWireless
661-595TPx CommunicationsLandline
661-596NusoLandline
661-597Verizon WirelessWireless
661-598AT&T MobilityWireless
661-599Verizon WirelessWireless
661-600AT&T (Teleport Communications)Landline
661-601CommioLandline
661-602Bandwidth.comVoIP
661-603Verizon WirelessWireless
661-604Verizon WirelessWireless
661-605Comcast Phone Of CaliforniaLandline
661-606T-MobileWireless
661-607Pacific BellLandline
661-608Onvoy Spectrum (Sinch)VoIP
661-609AT&T MobilityWireless
661-610AT&T (Teleport Communications)Landline
661-612Boost MobileLandline
661-613Exiant CommunicationsLandline
661-614AT&T MobilityWireless
661-615Lumen (Level 3)VoIP
661-616Lumen (Level 3)VoIP
661-617Lumen (Level 3)VoIP
661-618Verizon WirelessWireless
661-619Verizon WirelessWireless
661-620North County Communication CorporationLandline
661-621Metro by T-Mobile (MetroPCS)Wireless
661-622Lumen (Level 3)VoIP
661-623AT&T MobilityWireless
661-624Ip HorizonLandline
661-625T-MobileWireless
661-627T-MobileWireless
661-629CommioLandline
661-630Bhn Ip Enabled ServicesLandline
661-631Pacific BellLandline
661-632Pacific BellLandline
661-633Pacific BellLandline
661-634Pacific BellLandline
661-635Pacific BellLandline
661-636Pacific BellLandline
661-637Pacific BellLandline
661-638Pacific BellLandline
661-639Ton80 CommunicationsLandline
661-640Hd CarrierLandline
661-641Skye Telecom LLC dba SkyetelLandline
661-642AT&T (Teleport Communications)Landline
661-643Verizon WirelessWireless
661-644AT&T MobilityWireless
661-645AT&T MobilityWireless
661-646Onvoy (Sinch)VoIP
661-647Onvoy (Sinch)VoIP
661-648Verizon WirelessWireless
661-649TPx CommunicationsLandline
661-651Onvoy (Sinch)VoIP
661-652T-MobileWireless
661-653T-MobileWireless
661-654Pacific BellLandline
661-655FracTELLandline
661-656AT&T MobilityWireless
661-658Leap TelecomLandline
661-659Boost MobileLandline
661-660Onvoy Spectrum (Sinch)VoIP
661-662CommioLandline
661-663Pacific BellLandline
661-664Pacific BellLandline
661-665Pacific BellLandline
661-666Onvoy (Sinch)VoIP
661-667Metro by T-Mobile (MetroPCS)Wireless
661-668Lumen (Level 3)VoIP
661-669Bandwidth.comVoIP
661-670Metro by T-Mobile (MetroPCS)Wireless
661-671Verizon WirelessWireless
661-672T-MobileWireless
661-673Ip HorizonLandline
661-674T-MobileWireless
661-675T-MobileWireless
661-676Verizon WirelessWireless
661-677FracTELLandline
661-678AT&T LocalLandline
661-679AT&T (Teleport Communications)Landline
661-680Onvoy Spectrum (Sinch)VoIP
661-681NusoLandline
661-682WavenationLandline
661-683Onvoy (Sinch)VoIP
661-684Verizon WirelessWireless
661-685T-MobileWireless
661-686Onvoy (Sinch)VoIP
661-687TPx CommunicationsLandline
661-688FracTELLandline
661-689Lumen (Level 3)VoIP
661-690T-MobileWireless
661-691Wide VoiceLandline
661-692AT&T MobilityWireless
661-694NusoLandline
661-695Verizon Business (MCImetro)Landline
661-699Verizon WirelessWireless
661-701AT&T MobilityWireless
661-702Pacific BellLandline
661-703AT&T MobilityWireless
661-704Lumen (Level 3)VoIP
661-705TPx CommunicationsLandline
661-706AT&T MobilityWireless
661-709T-MobileWireless
661-713Verizon WirelessWireless
661-714Verizon WirelessWireless
661-716TPx CommunicationsLandline
661-717Metro by T-Mobile (MetroPCS)Wireless
661-718Frontier CommunicationsLandline
661-719AT&T MobilityWireless
661-720Pacific BellLandline
661-721Pacific BellLandline
661-722Frontier CommunicationsLandline
661-723Frontier CommunicationsLandline
661-724Frontier CommunicationsLandline
661-725Pacific BellLandline
661-726Frontier CommunicationsLandline
661-727Frontier CommunicationsLandline
661-728Frontier CommunicationsLandline
661-729Frontier CommunicationsLandline
661-730Onvoy Spectrum (Sinch)VoIP
661-731Lumen (Level 3)VoIP
661-732FracTELLandline
661-733Verizon WirelessWireless
661-735T-MobileWireless
661-736T-MobileWireless
661-738Exiant CommunicationsLandline
661-741VonageVoIP
661-742At&T EnterprisesLandline
661-743AT&T MobilityWireless
661-744FracTELLandline
661-745Bhn Ip Enabled ServicesLandline
661-746Pacific BellLandline
661-747Verizon WirelessWireless
661-748Onvoy (Sinch)VoIP
661-749Lumen (Level 3)VoIP
661-750T-MobileWireless
661-751Onvoy (Sinch)VoIP
661-752Lumen (Level 3)VoIP
661-753Pacific BellLandline
661-754AT&T MobilityWireless
661-755AT&T MobilityWireless
661-758Pacific BellLandline
661-759Metro by T-Mobile (MetroPCS)Wireless
661-760Onvoy (Sinch)VoIP
661-761Onvoy (Sinch)VoIP
661-762Frontier CommunicationsLandline
661-763Frontier CommunicationsLandline
661-764Frontier CommunicationsLandline
661-765Frontier CommunicationsLandline
661-766Frontier CommunicationsLandline
661-768Frontier CommunicationsLandline
661-769Frontier CommunicationsLandline
661-770T-MobileWireless
661-771Lumen (Level 3)VoIP
661-772Lumen (Level 3)VoIP
661-773At&T EnterprisesLandline
661-77433 WirelessWireless
661-775Pacific BellLandline
661-776Lumen (Level 3)VoIP
661-777Lumen (Level 3)VoIP
661-778Lumen (Level 3)VoIP
661-779Lumen (Level 3)VoIP
661-780Onvoy (Sinch)VoIP
661-781AT&T MobilityWireless
661-784AT&T MobilityWireless
661-786FracTELLandline
661-788FracTELLandline
661-789Pacific BellLandline
661-791Utility Telecom GroupLandline
661-792Frontier CommunicationsLandline
661-793Onvoy (Sinch)VoIP
661-794T-MobileWireless
661-795Verizon WirelessWireless
661-797Frontier CommunicationsLandline
661-799Pacific BellLandline
661-800Verizon WirelessWireless
661-802AT&T (Teleport Communications)Landline
661-803AT&T MobilityWireless
661-805Verizon WirelessWireless
661-808Pacific BellLandline
661-809Verizon WirelessWireless
661-810Metro by T-Mobile (MetroPCS)Wireless
661-812Verizon WirelessWireless
661-816T-MobileWireless
661-817Pacific BellLandline
661-820Verizon WirelessWireless
661-821Pacific BellLandline
661-822Pacific BellLandline
661-823Pacific BellLandline
661-824Pacific BellLandline
661-825T-MobileWireless
661-827Pacific BellLandline
661-829Pacific BellLandline
661-831Pacific BellLandline
661-832Pacific BellLandline
661-833Pacific BellLandline
661-834Pacific BellLandline
661-835Pacific BellLandline
661-836Pacific BellLandline
661-837Pacific BellLandline
661-839AT&T (Teleport Communications)Landline
661-840Onvoy Spectrum (Sinch)VoIP
661-843Onvoy (Sinch)VoIP
661-844FracTELLandline
661-845Pacific BellLandline
661-846Onvoy (Sinch)VoIP
661-847TPx CommunicationsLandline
661-849Pacific BellLandline
661-850Onvoy (Sinch)VoIP
661-851Lumen (Level 3)VoIP
661-852Pacific BellLandline
661-854Pacific BellLandline
661-855Pacific BellLandline
661-857Metro by T-Mobile (MetroPCS)Wireless
661-858Pacific BellLandline
661-859Pacific BellLandline
661-860Verizon WirelessWireless
661-861Pacific BellLandline
661-862Pacific BellLandline
661-863Pacific BellLandline
661-864Pacific BellLandline
661-865Utility Telecom GroupLandline
661-866FracTELLandline
661-867Pacific BellLandline
661-868Pacific BellLandline
661-869Pacific BellLandline
661-871Pacific BellLandline
661-872Pacific BellLandline
661-873Pacific BellLandline
661-874T-MobileWireless
661-877T-MobileWireless
661-878AT&T MobilityWireless
661-8808X8Landline
661-884Onvoy (Sinch)VoIP
661-885Onvoy (Sinch)VoIP
661-886AT&T MobilityWireless
661-887Onvoy (Sinch)VoIP
661-888Bandwidth.comVoIP
661-889AT&T LocalLandline
661-899FracTELLandline
661-900Metro by T-Mobile (MetroPCS)Wireless
661-902Verizon WirelessWireless
661-903AT&T MobilityWireless
661-904Verizon WirelessWireless
661-910AT&T MobilityWireless
661-912AT&T (Teleport Communications)Landline
661-916AT&T MobilityWireless
661-917AT&T MobilityWireless
661-91833 WirelessWireless
661-922FracTELLandline
661-927Lumen (Level 3)VoIP
661-928Onvoy (Sinch)VoIP
661-932Verizon WirelessWireless
661-933FracTELLandline
661-934Ton80 CommunicationsLandline
661-936T-MobileWireless
661-940Frontier CommunicationsLandline
661-941Spectrum (TWC IP)Landline
661-942Frontier CommunicationsLandline
661-943Frontier CommunicationsLandline
661-944Pacific BellLandline
661-945Frontier CommunicationsLandline
661-946Frontier CommunicationsLandline
661-947Pacific BellLandline
661-948Frontier CommunicationsLandline
661-949Frontier CommunicationsLandline
661-951Frontier CommunicationsLandline
661-952Lumen (Level 3)VoIP
661-955FracTELLandline
661-964TPx CommunicationsLandline
661-965AT&T MobilityWireless
661-966American Messaging (paging)Landline
661-970AT&T MobilityWireless
661-972AT&T MobilityWireless
661-974Pacific BellLandline
661-977Lumen (Level 3)VoIP
661-978Metro by T-Mobile (MetroPCS)Wireless
661-979Metro by T-Mobile (MetroPCS)Wireless
661-990Onvoy Spectrum (Sinch)VoIP
661-991Onvoy (Sinch)VoIP
661-992AT&T MobilityWireless
661-993AT&T MobilityWireless
661-994AT&T MobilityWireless
661-995Onvoy (Sinch)VoIP
661-996T-MobileWireless
661-997AT&T MobilityWireless
661-998AT&T (Teleport Communications)Landline
661-999Onvoy (Sinch)VoIP

Line type reflects the registry assignment; ported numbers can differ. Unknown 661 number calling? ActiveArmor® screens it before you ever look it up.

Cities & Communities in and around Area Code 661

Communities the 661 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 / communityKey ZIP codesAT&T internet
Acton93510, 93551Internet Air
Agua Dulce93510, 91387Fiber up to 5 GIG
Arvin93203, 93241, 93307Internet Air
Bakersfield93304, 93309, 93301Fiber up to 5 GIG
Bear Valley Springs93531, 93581Check address
Buttonwillow93206, 93276Check address
California City93505Internet Air
Delano93215, 93250Fiber up to 5 GIG
Di Giorgio93241, 93307Check address
Earlimart93219, 93256Internet Air
Elizabeth Lake93536Check address
Fellows93224, 93268Check address
Frazier Park93225Internet Air
Keene93531Internet Air
Lake Hughes93532, 93536, 91390Check address
Lamont93241, 93307, 93304Internet Air
Lancaster93534, 93551Internet Air
Lebec93243Internet Air

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.

661 Area Code Map

Area code 661 serves Lancaster and nearby communities in CA.

Map of area code 661 coverage in California↓  Printable PDF

Open the printable 661 map (PDF) · All California area codes · Home internet in Lancaster

Counties Covered by the 661 Area Code

Los Angeles County
Share of combined population88%
Population10,014,009
Largest 661 cityLancaster
Kern County
Share of combined population8%
Population909,235
Largest 661 cityBakersfield
Tulare County
Share of combined population4%
Population473,117
Largest 661 cityRichgrove

Counties are served in whole or in part; population is U.S. Census Bureau ACS 2023.

The 661, explained

Area Code 661: More Than a Number in Lancaster

In Lancaster, the 661 is more than digits on a caller ID. It arrived in 1999, carved out of the 805, and it has meant Lancaster and surrounding communities ever since — 672 carrier prefixes keep its lines busy today, and an established 661 number still says you’ve been here a while.

The map tells its own story: Lancaster and surrounding communities, with no overlay on its territory. The area and the code are still one and the same — rare in California and getting rarer nationwide.

Keeping a 661 matters here. An existing 661 number ports to a new phone, a new carrier, or a new AT&T line, and stays yours anywhere in the U.S.

Need a new local number? Shop plans Keep your 661: bring it to AT&T

Internet, wireless & stores in the 661

AT&T Home Internet in Area Code 661

AT&T home internet serves communities across area code 661, 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.

No data capsNo annual contractNo equipment fees

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.

Check availability at your addressHome internet in Lancaster ›

Pair it with wireless in an internet + wireless bundle. Run a business in the 661? AT&T Business Internet is available at many addresses.

Family streaming together on AT&T home internet
Fiber install day in the 661Check your address ›

Moving to Area Code 661?

Set up home internet in area code 661 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 661 number from anywhere, or keep your old number when you arrive. An AT&T store nearby can handle the whole switch in one visit.

1 · Check your addressSee Fiber or Internet Air availability in seconds.
2 · Schedule for move-in dayInstall lined up before the boxes arrive.
3 · Keep your numberYour mobile number ports; your internet moves.
Plan your move with AT&T
Couple setting up internet on a laptop among moving boxes
Get set up before move-in dayPlan your move ›

AT&T Wireless in Area Code 661

AT&T’s 5G network covers most of area code 661. ActiveArmor® spam blocking is included with every unlimited plan, your 661 number stays yours, and great cell phone deals in Lancaster are a tap away.

5G across the 661ActiveArmor® includedKeep your 661 number

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.

Shop wireless plansBring your 661 number ›

Need a new 661 number? Ask when you activate a line, and porting an existing 661 number keeps it yours.

See the AT&T wireless coverage map for the 661 ›

Woman smiling at her phone on an Lancaster street
Stay connected across LancasterShop wireless plans ›

AT&T Stores in Area Code 661

Looking for cell phone stores in area code 661? These stores answer on 661 numbers — walk in for switching, porting, upgrades and hands-on help:

Bakersfield AT&T Store Store 4300 Ming Ave, Bakersfield+1 661-368-7593
Bakersfield AT&T Store East Hills Store 587 3501 Mallview Rd, Bakersfield+1 661-368-7597
Bakersfield AT&T Store Bakersfield 6603 Panama Lane, Bakersfield+1 661-615-8287
Cell phone stores in Lancaster › All 26 locations: company owned and authorized retailers

Every AT&T store in the region, company owned and authorized retailer alike, each with its own store page.

AT&T store employee helping a customer with her phone
Real help from real people in LancasterFind your store ›

All AT&T Stores with 661 Numbers

Every store below answers on a 661 number. Tap any number to call.

21 AT&T stores with 661 numbers
CityStorePhone
BakersfieldAT&T Store River Walk+1 661-243-8328
BakersfieldAT&T Store Artisan Square+1 661-765-6690
BakersfieldAT&T Store Panama+1 661-200-0329
BakersfieldAT&T Store Vp Mall+1 661-247-1449
BakersfieldAT&T Store Rosedale Store+1 661-368-7591
BakersfieldAT&T Store East Hills Store 587+1 661-368-7597
BakersfieldAT&T Store Truxtun Store 32+1 661-368-7595
BakersfieldAT&T Store Store+1 661-368-7593
BakersfieldAT&T Store Bakersfield+1 661-615-8287
BakersfieldAT&T Store Mrktplace+1 661-200-0328
BakersfieldAT&T Store Rosedale+1 661-588-6777
DelanoAT&T Store Delano+1 661-877-9285
LancasterAT&T Store East+1 661-524-3641
LancasterAT&T Store Store+1 661-998-2574
PalmdaleAT&T Store Store 314+1 661-998-2568
PalmdaleAT&T Store East+1 661-285-4400
PalmdaleAT&T Store Rancho Vista+1 661-943-3575
Santa ClaritaAT&T Store Santa Clarita+1 661-453-2633
Santa ClaritaAT&T Store Store+1 661-998-2572
TehachapiAT&T Store Tehachapi+1 661-823-8229
ValenciaAT&T Store Valencia+1 661-998-2570

International Calling from Area Code 661

Calling abroad from area code 661? 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.

Where the 661 calls most:MexicoPhilippinesChinaIndiaVietnam

Top places of birth among foreign-born residents of the 661’s counties, U.S. Census Bureau ACS 2023.

Calling abroad from a 661 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.

See international calling plans
Father and son waving during a video call with family abroad
Lancaster calls the worldSee international plans ›

661 Area Code Quick Facts & Dialing

StateCalifornia
Time zonePacific
OverlaysNonethe 661 stands alone
Established1999split from the 805
Dialing10 digits7-digit local calls may still work
Toll-free?Nogeographic code
Population11.4Mcounties served, Census 2023
Largest cityLancaster+33 more ›

How to dial a 661 number

ScenarioFormatExample
Local call (within the region)661 + 7-digit number(661) 555-0100
Long distance (within the U.S.)1 + 661 + 7-digit number1 (661) 555-0100
Calling 661 from another country+1 661 + 7-digit number+1 661 555 0100
From a mobile phone(661) + 7-digit number(661) 555-0100

A Short History of Area Code 661

Created in 1999 as a split from the 805, the 661 has meant Lancaster and surrounding communities ever since. No splits or overlays have divided its territory since.

1999Split from the 805

In service since 1999, with no overlay on its territory today.

Nearby & Related Area Codes

805Parent code818Also California310Also California213Also California323Also California

Browse area codes by state: California (41) · Texas (29) · Florida (23) · all 50 states ›

Area Code 661 FAQ

What area code is 661?
661 is the area code for Lancaster, California and the surrounding communities. It appears at the front of every local 10-digit phone number in the area.
Where is area code 661?
Area code 661 serves Lancaster, California and nearby communities including Acton, Aerial Acres, Agua Dulce. The full city list is in the cities table above.
Why did I get a text message from a 661 number?
The most common 661 text scam opens like a wrong number (“u at home?”, “are you busy tomorrow?”) and tries to move you to WhatsApp. Don’t reply. Forward the text to 7726 (SPAM) and delete it. AT&T ActiveArmor® filters known scam senders automatically.
Who called me from area code 661?
A 661 number usually means Lancaster or a nearby community, but spoofing is common. This page’s prefix lookup isn’t a reverse phone lookup — it can’t name the caller, but it shows the carrier, line type and community a number was issued to, which is often enough to judge a call.
What time zone is area code 661?
Pacific time. The live local time is shown at the top of this page.
Why am I getting calls from 661 numbers?
661 is an active, legitimate California area code, but scammers spoof local numbers because people answer them. If there’s no voicemail, let it go. AT&T ActiveArmor® blocks and labels spam automatically, and you can report unwanted calls at reportfraud.ftc.gov. The spam report board above shows which 661 prefixes are drawing complaints right now.
Is 661 a toll-free number?
No. 661 is a geographic area code tied to Lancaster, California. Toll-free calls come from 800, 833, 844, 855, 866, 877 and 888 numbers.
When was area code 661 created?
Area code 661 entered service in 1999 and still covers Lancaster and the surrounding California communities today. The full timeline is in the history section above.
Which cities use area code 661?
The largest communities include Acton, Agua Dulce, Arvin, Bakersfield, Bear Valley Springs. The full list is in the cities table above.
Does AT&T offer service in the 661?
Yes: home internet, wireless and retail stores across the 661. Availability is checked address by address.
Can I still get a 661 number?
Yes. Carriers in Lancaster and across the 661 still issue 661 numbers on new lines, and you can port an existing 661 number to any carrier.
Can I keep my 661 number if I move?
Yes. Phone numbers are portable: your 661 number can move with you anywhere in the U.S., whether you stay with your carrier or switch.
Sources: city and store data from AT&T records; prefix and carrier assignments from the public numbering registry (pulled July 2026). Facts regenerate monthly.
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