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California · Pacific Time  Updated July 2026

Area Code 510

Oakland and surrounding communities

Area code 510 serves Oakland, California and communities including Alameda, Alamo, Albany 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 510 number? The code is legit, but spoofing is common. Look up the prefix ›
StateCalifornia
Largest cityOakland
Local time8:20 PM PT
Nearby925 · 415 · 650
Since1991
Call now?Good time to call back

Who Called Me from Area Code 510?

Quick answerA 510 call usually comes from Oakland 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 510 prefixes, right on this page.
  • Curious who issued a number? Every 510 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 510 prefixes this month
PrefixReported patternReport volume
(510) 201-XXXXRobocall-heavy
(510) 344-XXXXRobocall-heavy
(510) 721-XXXXRobocall-heavy
(510) 592-XXXXRobocall-heavy
(510) 397-XXXXRobocall-heavy

400 unwanted-call reports naming 510 numbers in FTC Do Not Call complaint data, July 2–17, 2026. Consumer-reported and unverified.

Block spam calls in the 510, 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 510 a Scam?

No. 510 is a legitimate Oakland area code.

It’s added to the 415 region in 1991 and serves Oakland and surrounding communities. But legitimacy of the code says nothing about any single call. Scammers spoof local numbers constantly.

The code is realAdded to the 415 region in 1991; 785 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 510 numbers

The most common area code 510 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 510

Caller ID is easy to forge. Spoofing fakes the number a call displays. The real owner of that 510 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 510 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 510 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.

510 Area Code Prefix & Carrier Lookup

The three digits after the area code identify the carrier a number was issued to. All 785 assigned 510 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 510 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.

785 prefixes · updated monthly
PrefixCarrierLine type
510-200Metro by T-Mobile (MetroPCS)Wireless
510-201Peerless NetworkVoIP
510-202Utility Telecom GroupLandline
510-203T-MobileWireless
510-204Pacific BellLandline
510-205Metro by T-Mobile (MetroPCS)Wireless
510-206AT&T MobilityWireless
510-207AT&T MobilityWireless
510-208Pacific BellLandline
510-209Metro by T-Mobile (MetroPCS)Wireless
510-210Bandwidth.comVoIP
510-212Spok (paging)Landline
510-213T-MobileWireless
510-214Verizon Business (MCImetro)Landline
510-215Pacific BellLandline
510-216T-MobileWireless
510-217AT&T (Teleport Communications)Landline
510-218Spok (paging)Landline
510-219AT&T MobilityWireless
510-220AT&T MobilityWireless
510-221Metro by T-Mobile (MetroPCS)Wireless
510-222Pacific BellLandline
510-223Pacific BellLandline
510-224T-MobileWireless
510-225Verizon Business (MCImetro)Landline
510-226Pacific BellLandline
510-227Lumen (Level 3)VoIP
510-228Lumen (Level 3)VoIP
510-229Pacific BellLandline
510-230T-MobileWireless
510-231Pacific BellLandline
510-232Pacific BellLandline
510-233Pacific BellLandline
510-234Pacific BellLandline
510-235Pacific BellLandline
510-236Pacific BellLandline
510-237Pacific BellLandline
510-238Pacific BellLandline
510-239TPx CommunicationsLandline
510-240Lumen (Level 3)VoIP
510-241T-MobileWireless
510-242Pacific BellLandline
510-243Pacific BellLandline
510-244Bandwidth.comVoIP
510-245Pacific BellLandline
510-246Verizon WirelessWireless
510-247Pacific BellLandline
510-248Lumen (Level 3)VoIP
510-249Pacific BellLandline
510-250Lumen (Level 3)VoIP
510-251Pacific BellLandline
510-252Pacific BellLandline
510-253Lumen (Level 3)VoIP
510-254Lumen (Level 3)VoIP
510-255Bandwidth.comVoIP
510-256Bandwidth.comVoIP
510-257AT&T (Teleport Communications)Landline
510-258Pacific BellLandline
510-259Pacific BellLandline
510-260Comcast Phone Of CaliforniaLandline
510-261Pacific BellLandline
510-262Pacific BellLandline
510-263Pacific BellLandline
510-264Pacific BellLandline
510-265Pacific BellLandline
510-266Pacific BellLandline
510-267Pacific BellLandline
510-268Pacific BellLandline
510-269Verizon Business (MCImetro)Landline
510-270Verizon Business (MCImetro)Landline
510-271Pacific BellLandline
510-272Pacific BellLandline
510-273Pacific BellLandline
510-274Utility Telecom GroupLandline
510-275Onvoy (Sinch)VoIP
510-276Pacific BellLandline
510-277Lumen (Level 3)VoIP
510-278Pacific BellLandline
510-279Lumen (Level 3)VoIP
510-280Verizon Business (MCImetro)Landline
510-281Onvoy (Sinch)VoIP
510-282T-MobileWireless
510-283Verizon Business (MCImetro)Landline
510-284Pacific BellLandline
510-285Verizon Business (MCImetro)Landline
510-286Pacific BellLandline
510-287Pacific BellLandline
510-288Onvoy (Sinch)VoIP
510-289AT&T MobilityWireless
510-290T-MobileWireless
510-291Onvoy (Sinch)VoIP
510-292Pacific BellLandline
510-293Pacific BellLandline
510-294Metro by T-Mobile (MetroPCS)Wireless
510-295Verizon WirelessWireless
510-296Lumen (Level 3)VoIP
510-297Pacific BellLandline
510-298AT&T MobilityWireless
510-299Verizon WirelessWireless
510-300TPx CommunicationsLandline
510-301Verizon WirelessWireless
510-302Pacific BellLandline
510-303AT&T MobilityWireless
510-304AT&T MobilityWireless
510-305AT&T MobilityWireless
510-306Metro by T-Mobile (MetroPCS)Wireless
510-307Pacific BellLandline
510-308Spok (paging)Landline
510-309T-MobileWireless
510-310Sequoia WirelessWireless
510-312CommioLandline
510-313AT&T (Teleport Communications)Landline
510-314T-MobileWireless
510-315Lumen (Level 3)VoIP
510-316AT&T MobilityWireless
510-317Pacific BellLandline
510-318Verizon WirelessWireless
510-319Onvoy (Sinch)VoIP
510-320AT&T MobilityWireless
510-321Spok (paging)Landline
510-322Verizon Business (MCImetro)Landline
510-323Verizon Business (MCImetro)Landline
510-324Pacific BellLandline
510-325AT&T MobilityWireless
510-326AT&T MobilityWireless
510-327Onvoy (Sinch)VoIP
510-328T-MobileWireless
510-329AT&T MobilityWireless
510-330Onvoy (Sinch)VoIP
510-331AT&T MobilityWireless
510-332AT&T MobilityWireless
510-333AT&T MobilityWireless
510-334AT&T MobilityWireless
510-335Onvoy (Sinch)VoIP
510-336Pacific BellLandline
510-337Pacific BellLandline
510-338Pacific BellLandline
510-339Pacific BellLandline
510-340Verizon WirelessWireless
510-342TPx CommunicationsLandline
510-343TPx CommunicationsLandline
510-344Lumen (Level 3)VoIP
510-345T-MobileWireless
510-346Pacific BellLandline
510-347Pacific BellLandline
510-34833 WirelessWireless
510-349American Messaging (paging)Landline
510-350AT&T (Teleport Communications)Landline
510-351Pacific BellLandline
510-352Pacific BellLandline
510-353Pacific BellLandline
510-354Pacific BellLandline
510-355Lumen (Level 3)VoIP
510-356Pacific BellLandline
510-357Pacific BellLandline
510-358AT&T MobilityWireless
510-359Verizon WirelessWireless
510-360Pacific BellLandline
510-361Lumen (Level 3)VoIP
510-362T-MobileWireless
510-363Verizon WirelessWireless
510-364AT&T MobilityWireless
510-365T-MobileWireless
510-366AT&T MobilityWireless
510-367AT&T MobilityWireless
510-368Verizon WirelessWireless
510-369Onvoy (Sinch)VoIP
510-370Peerless NetworkVoIP
510-371Lumen (Level 3)VoIP
510-372Onvoy (Sinch)VoIP
510-373Onvoy (Sinch)VoIP
510-374Pacific BellLandline
510-375T-MobileWireless
510-376Metro by T-Mobile (MetroPCS)Wireless
510-377T-MobileWireless
510-378AT&T MobilityWireless
510-379Lumen (Level 3)VoIP
510-380Onvoy (Sinch)VoIP
510-381Verizon WirelessWireless
510-382Pacific BellLandline
510-383Pacific BellLandline
510-384AT&T MobilityWireless
510-385T-MobileWireless
510-386AT&T MobilityWireless
510-387AT&T MobilityWireless
510-388AT&T MobilityWireless
510-389AT&T (Teleport Communications)Landline
510-390Verizon WirelessWireless
510-391AT&T MobilityWireless
510-392AT&T MobilityWireless
510-393T-MobileWireless
510-394AT&T (Teleport Communications)Landline
510-395AT&T (Teleport Communications)Landline
510-396T-MobileWireless
510-397Comcast Phone Of CaliforniaLandline
510-398Bandwidth.comVoIP
510-399Onvoy (Sinch)VoIP
510-400Verizon Business (MCImetro)Landline
510-401TPx CommunicationsLandline
510-402Bandwidth.comVoIP
510-403TPx CommunicationsLandline
510-404Verizon Business (MCImetro)Landline
510-405Onvoy (Sinch)VoIP
510-406Verizon WirelessWireless
510-407Verizon WirelessWireless
510-408Pacific BellLandline
510-409AT&T MobilityWireless
510-410Verizon WirelessWireless
510-412Pacific BellLandline
510-413Pacific BellLandline
510-414Verizon WirelessWireless
510-415T-MobileWireless
510-416North County Communication CorporationLandline
510-417T-MobileWireless
510-418Verizon WirelessWireless
510-419Pacific BellLandline
510-420Pacific BellLandline
510-421Verizon WirelessWireless
510-422T-MobileWireless
510-423Windstream (Paetec)Landline
510-424T-MobileWireless
510-425Pacific BellLandline
510-426Verizon WirelessWireless
510-427Verizon WirelessWireless
510-428Pacific BellLandline
510-429Pacific BellLandline
510-430Pacific BellLandline
510-431Lumen (Level 3)VoIP
510-432AT&T MobilityWireless
510-433Pacific BellLandline
510-434Pacific BellLandline
510-435T-MobileWireless
510-436Pacific BellLandline
510-437Pacific BellLandline
510-438Pacific BellLandline
510-439Onvoy (Sinch)VoIP
510-440Pacific BellLandline
510-441Pacific BellLandline
510-442Utility Telecom GroupLandline
510-443Peerless NetworkVoIP
510-444Pacific BellLandline
510-445Pacific BellLandline
510-446Pacific BellLandline
510-447Metro by T-Mobile (MetroPCS)Wireless
510-448Utility Telecom GroupLandline
510-449AT&T (Teleport Communications)Landline
510-450Pacific BellLandline
510-451Pacific BellLandline
510-452Pacific BellLandline
510-453Metro by T-Mobile (MetroPCS)Wireless
510-454Pacific BellLandline
510-455T-MobileWireless
510-456TPx CommunicationsLandline
510-457AT&T (Teleport Communications)Landline
510-458Verizon WirelessWireless
510-459T-MobileWireless
510-460Verizon WirelessWireless
510-461AT&T MobilityWireless
510-462Onvoy (Sinch)VoIP
510-463TPx CommunicationsLandline
510-464Pacific BellLandline
510-465Pacific BellLandline
510-466Pacific BellLandline
510-467Lumen (Level 3)VoIP
510-468Verizon WirelessWireless
510-469Metro by T-Mobile (MetroPCS)Wireless
510-470Bandwidth.comVoIP
510-471Pacific BellLandline
510-472Metro by T-Mobile (MetroPCS)Wireless
510-473Verizon Business (MCImetro)Landline
510-474Verizon Business (MCImetro)Landline
510-475Pacific BellLandline
510-476Pacific BellLandline
510-477Pacific BellLandline
510-478Verizon Business (MCImetro)Landline
510-479AT&T (Teleport Communications)Landline
510-480T-MobileWireless
510-481Pacific BellLandline
510-482Pacific BellLandline
510-483Pacific BellLandline
510-484Metro by T-Mobile (MetroPCS)Wireless
510-485Metro by T-Mobile (MetroPCS)Wireless
510-486Pacific BellLandline
510-487Pacific BellLandline
510-488Verizon Business (MCImetro)Landline
510-489Pacific BellLandline
510-490Pacific BellLandline
510-491AT&T (Teleport Communications)Landline
510-492Pacific BellLandline
510-493Verizon Business (MCImetro)Landline
510-494Pacific BellLandline
510-495Pacific BellLandline
510-496TPx CommunicationsLandline
510-497Verizon Business (MCImetro)Landline
510-498Pacific BellLandline
510-499AT&T MobilityWireless
510-500Verizon Business (MCImetro)Landline
510-501AT&T MobilityWireless
510-502AT&T MobilityWireless
510-503Utility Telecom GroupLandline
510-504Verizon WirelessWireless
510-505Pacific BellLandline
510-506Verizon WirelessWireless
510-507Verizon WirelessWireless
510-508AT&T MobilityWireless
510-509Lumen (Level 3)VoIP
510-510ShelcommLandline
510-512T-MobileWireless
510-513T-MobileWireless
510-514Peerless NetworkVoIP
510-515Spok (paging)Landline
510-516Bandwidth.comVoIP
510-517AT&T MobilityWireless
510-518Peerless NetworkVoIP
510-519Verizon WirelessWireless
510-520AT&T MobilityWireless
510-521Pacific BellLandline
510-522Pacific BellLandline
510-523Pacific BellLandline
510-524Pacific BellLandline
510-525Pacific BellLandline
510-526Pacific BellLandline
510-527Pacific BellLandline
510-528Pacific BellLandline
510-529Pacific BellLandline
510-530Pacific BellLandline
510-531Pacific BellLandline
510-532Pacific BellLandline
510-533Pacific BellLandline
510-534Pacific BellLandline
510-535Pacific BellLandline
510-536Pacific BellLandline
510-537Pacific BellLandline
510-538Pacific BellLandline
510-539Utility Telecom GroupLandline
510-540Pacific BellLandline
510-541AT&T MobilityWireless
510-542Verizon Business (MCImetro)Landline
510-543Metro by T-Mobile (MetroPCS)Wireless
510-544Onvoy (Sinch)VoIP
510-545Verizon Business (MCImetro)Landline
510-546Onvoy Spectrum (Sinch)VoIP
510-547Pacific BellLandline
510-548Pacific BellLandline
510-549Pacific BellLandline
510-550Lumen (Level 3)VoIP
510-551Metro by T-Mobile (MetroPCS)Wireless
510-552Verizon WirelessWireless
510-553Pacific BellLandline
510-55433 WirelessWireless
510-556Lumen (Level 3)VoIP
510-557T-MobileWireless
510-558Pacific BellLandline
510-559Pacific BellLandline
510-560Comcast Phone Of CaliforniaLandline
510-561AT&T MobilityWireless
510-562Pacific BellLandline
510-563Pacific BellLandline
510-564Verizon Business (MCImetro)Landline
510-565T-MobileWireless
510-566Verizon WirelessWireless
510-567Pacific BellLandline
510-568Pacific BellLandline
510-569Pacific BellLandline
510-570T-MobileWireless
510-571AT&T MobilityWireless
510-572Verizon Business (MCImetro)Landline
510-573Comcast Phone Of CaliforniaLandline
510-574Pacific BellLandline
510-575Metro by T-Mobile (MetroPCS)Wireless
510-576Verizon Business (MCImetro)Landline
510-577Pacific BellLandline
510-578Verizon Business (MCImetro)Landline
510-579AT&T MobilityWireless
510-580Verizon Business (MCImetro)Landline
510-581Pacific BellLandline
510-582Pacific BellLandline
510-583Pacific BellLandline
510-584Verizon Business (MCImetro)Landline
510-585TPx CommunicationsLandline
510-586Comcast Phone Of CaliforniaLandline
510-587Pacific BellLandline
510-588Onvoy (Sinch)VoIP
510-589AT&T MobilityWireless
510-590AT&T MobilityWireless
510-591AT&T MobilityWireless
510-592Lumen (Level 3)VoIP
510-593Metro by T-Mobile (MetroPCS)Wireless
510-594Pacific BellLandline
510-595Pacific BellLandline
510-596Pacific BellLandline
510-597Pacific BellLandline
510-598T-MobileWireless
510-599AT&T MobilityWireless
510-600Onvoy (Sinch)VoIP
510-601Pacific BellLandline
510-602Verizon WirelessWireless
510-603Comcast Phone Of CaliforniaLandline
510-604AT&T MobilityWireless
510-605Verizon WirelessWireless
510-606Verizon WirelessWireless
510-607TPx CommunicationsLandline
510-608Pacific BellLandline
510-609T-MobileWireless
510-610AT&T MobilityWireless
510-612AT&T MobilityWireless
510-613Pacific BellLandline
510-614Pacific BellLandline
510-615Pacific BellLandline
510-616Sonic TelecomLandline
510-617Onvoy (Sinch)VoIP
510-618Pacific BellLandline
510-619Lumen (Level 3)VoIP
510-620Pacific BellLandline
510-621Verizon Business (MCImetro)Landline
510-622Pacific BellLandline
510-623Pacific BellLandline
510-624Pacific BellLandline
510-625Pacific BellLandline
510-626Bandwidth.comVoIP
510-627Pacific BellLandline
510-628Pacific BellLandline
510-629Lumen (Level 3)VoIP
510-630T-MobileWireless
510-631AT&T MobilityWireless
510-632Pacific BellLandline
510-633Pacific BellLandline
510-634Verizon WirelessWireless
510-635Pacific BellLandline
510-636Pacific BellLandline
510-637Pacific BellLandline
510-638Pacific BellLandline
510-639Pacific BellLandline
510-640T-MobileWireless
510-641AT&T MobilityWireless
510-642Pacific BellLandline
510-643Pacific BellLandline
510-644Pacific BellLandline
510-645Pacific BellLandline
510-646Bandwidth.comVoIP
510-647Pacific BellLandline
510-648AT&T MobilityWireless
510-649Pacific BellLandline
510-650Onvoy (Sinch)VoIP
510-651Pacific BellLandline
510-652Pacific BellLandline
510-653Pacific BellLandline
510-654Pacific BellLandline
510-655Pacific BellLandline
510-656Pacific BellLandline
510-657Pacific BellLandline
510-658Pacific BellLandline
510-659Pacific BellLandline
510-660AT&T MobilityWireless
510-661Pacific BellLandline
510-662Verizon Business (MCImetro)Landline
510-663Pacific BellLandline
510-664Pacific BellLandline
510-665Pacific BellLandline
510-666Pacific BellLandline
510-667Pacific BellLandline
510-668Pacific BellLandline
510-669Pacific BellLandline
510-670Pacific BellLandline
510-671Bandwidth.comVoIP
510-672Verizon WirelessWireless
510-673Verizon WirelessWireless
510-674Onvoy (Sinch)VoIP
510-675Pacific BellLandline
510-676AT&T MobilityWireless
510-677Metro by T-Mobile (MetroPCS)Wireless
510-678Pacific BellLandline
510-679Verizon WirelessWireless
510-680Lumen (CenturyLink)Landline
510-681Metro by T-Mobile (MetroPCS)Wireless
510-682Metro by T-Mobile (MetroPCS)Wireless
510-683Pacific BellLandline
510-684Metro by T-Mobile (MetroPCS)Wireless
510-685Verizon WirelessWireless
510-686At&T EnterprisesLandline
510-687Pacific BellLandline
510-688T-MobileWireless
510-689Metro by T-Mobile (MetroPCS)Wireless
510-690Pacific BellLandline
510-691T-MobileWireless
510-692Metro by T-Mobile (MetroPCS)Wireless
510-693AT&T MobilityWireless
510-694Onvoy (Sinch)VoIP
510-695Verizon WirelessWireless
510-696T-MobileWireless
510-697AT&T MobilityWireless
510-698TPx CommunicationsLandline
510-69933 WirelessWireless
510-701AT&T MobilityWireless
510-702Spok (paging)Landline
510-703AT&T MobilityWireless
510-704Pacific BellLandline
510-705Pacific BellLandline
510-706Metro by T-Mobile (MetroPCS)Wireless
510-707T-MobileWireless
510-708AT&T MobilityWireless
510-709Ip HorizonLandline
510-710AT&T MobilityWireless
510-712AT&T MobilityWireless
510-713Pacific BellLandline
510-714T-MobileWireless
510-715Metro by T-Mobile (MetroPCS)Wireless
510-716Spok (paging)Landline
510-717T-MobileWireless
510-718American Messaging (paging)Landline
510-719Metro by T-Mobile (MetroPCS)Wireless
510-720Spok (paging)Landline
510-721Onvoy (Sinch)VoIP
510-722Bandwidth.comVoIP
510-723Pacific BellLandline
510-724Pacific BellLandline
510-725Lumen (Level 3)VoIP
510-726Peerless NetworkVoIP
510-727Pacific BellLandline
510-728Pacific BellLandline
510-729Pacific BellLandline
510-730Bandwidth.comVoIP
510-731Verizon Business (MCImetro)Landline
510-732Pacific BellLandline
510-733Pacific BellLandline
510-734AT&T MobilityWireless
510-735Pacific BellLandline
510-736T-MobileWireless
510-737AT&T MobilityWireless
510-738Peerless NetworkVoIP
510-739Pacific BellLandline
510-740Verizon Business (MCImetro)Landline
510-741Pacific BellLandline
510-742Pacific BellLandline
510-743Verizon Business (MCImetro)Landline
510-744Pacific BellLandline
510-745Pacific BellLandline
510-746TPx CommunicationsLandline
510-747Pacific BellLandline
510-748Pacific BellLandline
510-749Pacific BellLandline
510-750Metro by T-Mobile (MetroPCS)Wireless
510-751Onvoy (Sinch)VoIP
510-752Pacific BellLandline
510-753T-MobileWireless
510-754Metro by T-Mobile (MetroPCS)Wireless
510-755Metro by T-Mobile (MetroPCS)Wireless
510-756T-MobileWireless
510-757Metro by T-Mobile (MetroPCS)Wireless
510-758Pacific BellLandline
510-759AT&T MobilityWireless
510-760Metro by T-Mobile (MetroPCS)Wireless
510-761AT&T MobilityWireless
510-763Pacific BellLandline
510-764Lumen (Level 3)VoIP
510-765Pacific BellLandline
510-766Bandwidth.comVoIP
510-767T-MobileWireless
510-768Verizon Business (MCImetro)Landline
510-769Pacific BellLandline
510-770Pacific BellLandline
510-771Verizon Business (MCImetro)Landline
510-772Metro by T-Mobile (MetroPCS)Wireless
510-773T-MobileWireless
510-774T-MobileWireless
510-775Bandwidth.comVoIP
510-776Metro by T-Mobile (MetroPCS)Wireless
510-777Pacific BellLandline
510-778Comcast Phone Of CaliforniaLandline
510-779Lumen (Level 3)VoIP
510-780Pacific BellLandline
510-781Pacific BellLandline
510-782Pacific BellLandline
510-783Pacific BellLandline
510-784Pacific BellLandline
510-785Pacific BellLandline
510-786Pacific BellLandline
510-787Pacific BellLandline
510-788Verizon Business (MCImetro)Landline
510-789Verizon Business (MCImetro)Landline
510-790Pacific BellLandline
510-791Pacific BellLandline
510-792Pacific BellLandline
510-793Pacific BellLandline
510-794Pacific BellLandline
510-795Pacific BellLandline
510-796Pacific BellLandline
510-797Pacific BellLandline
510-798Metro by T-Mobile (MetroPCS)Wireless
510-799Pacific BellLandline
510-800Onvoy (Sinch)VoIP
510-801Spok (paging)Landline
510-802Spok (paging)Landline
510-803Verizon Business (MCImetro)Landline
510-804T-MobileWireless
510-805Spok (paging)Landline
510-806Lumen (Level 3)VoIP
510-807T-MobileWireless
510-808Pacific BellLandline
510-809TPx CommunicationsLandline
510-810T-MobileWireless
510-812Metro by T-Mobile (MetroPCS)Wireless
510-813AT&T MobilityWireless
510-814Pacific BellLandline
510-815T-MobileWireless
510-816AT&T MobilityWireless
510-817Pacific BellLandline
510-818Pacific BellLandline
510-819Onvoy Spectrum (Sinch)VoIP
510-820T-MobileWireless
510-821Verizon WirelessWireless
510-822T-MobileWireless
510-823T-MobileWireless
510-824Verizon Business (MCImetro)Landline
510-825Metro by T-Mobile (MetroPCS)Wireless
510-826AT&T MobilityWireless
510-827Metro by T-Mobile (MetroPCS)Wireless
510-828Verizon WirelessWireless
510-829Metro by T-Mobile (MetroPCS)Wireless
510-830Ip HorizonLandline
510-831Bandwidth.comVoIP
510-832Pacific BellLandline
510-833Comcast Phone Of CaliforniaLandline
510-834Pacific BellLandline
510-835Pacific BellLandline
510-836Pacific BellLandline
510-837AT&T (Teleport Communications)Landline
510-838Bandwidth.comVoIP
510-839Pacific BellLandline
510-840Utility Telecom GroupLandline
510-841Pacific BellLandline
510-842Verizon Business (MCImetro)Landline
510-843Pacific BellLandline
510-844Verizon Business (MCImetro)Landline
510-845Pacific BellLandline
510-846Verizon WirelessWireless
510-847Verizon WirelessWireless
510-848Pacific BellLandline
510-849Pacific BellLandline
510-850T-MobileWireless
510-851Verizon WirelessWireless
510-852Verizon WirelessWireless
510-853Verizon WirelessWireless
510-854Bandwidth.comVoIP
510-855Utility Telecom GroupLandline
510-856Verizon Business (MCImetro)Landline
510-857Verizon Business (MCImetro)Landline
510-858Metro by T-Mobile (MetroPCS)Wireless
510-859TPx CommunicationsLandline
510-860Lumen (Level 3)VoIP
510-861AT&T MobilityWireless
510-862AT&T MobilityWireless
510-863Verizon Business (MCImetro)Landline
510-864Pacific BellLandline
510-865Pacific BellLandline
510-866Metro by T-Mobile (MetroPCS)Wireless
510-867T-MobileWireless
510-868Lumen (Level 3)VoIP
510-869Pacific BellLandline
510-870Lumen (Level 3)VoIP
510-871Verizon WirelessWireless
510-872Metro by T-Mobile (MetroPCS)Wireless
510-873Pacific BellLandline
510-874Pacific BellLandline
510-875Verizon Business (MCImetro)Landline
510-876At&T EnterprisesLandline
510-877Verizon Business (MCImetro)Landline
510-878Comcast Phone Of CaliforniaLandline
510-879AT&T (Teleport Communications)Landline
510-880Onvoy (Sinch)VoIP
510-881Pacific BellLandline
510-882Verizon WirelessWireless
510-883Pacific BellLandline
510-884Utility Telecom GroupLandline
510-885Pacific BellLandline
510-886Pacific BellLandline
510-887Pacific BellLandline
510-888Pacific BellLandline
510-889Pacific BellLandline
510-890T-MobileWireless
510-891Pacific BellLandline
510-892Onvoy (Sinch)VoIP
510-893Pacific BellLandline
510-894Comcast Phone Of CaliforniaLandline
510-895Pacific BellLandline
510-896AT&T (Teleport Communications)Landline
510-897AT&T (Teleport Communications)Landline
510-898AT&T (Teleport Communications)Landline
510-899Bandwidth.comVoIP
510-900Onvoy (Sinch)VoIP
510-901Bandwidth.comVoIP
510-902Onvoy (Sinch)VoIP
510-903Lumen (Level 3)VoIP
510-904Lumen (Level 3)VoIP
510-905Metro by T-Mobile (MetroPCS)Wireless
510-906Onvoy (Sinch)VoIP
510-907Verizon WirelessWireless
510-908Verizon WirelessWireless
510-909Verizon WirelessWireless
510-910Verizon WirelessWireless
510-912Verizon WirelessWireless
510-913Verizon WirelessWireless
510-914Verizon WirelessWireless
510-915Verizon WirelessWireless
510-916T-MobileWireless
510-917Verizon WirelessWireless
510-918AT&T MobilityWireless
510-919Verizon WirelessWireless
510-920Sonic TelecomLandline
510-921AT&T (Teleport Communications)Landline
510-922Pacific BellLandline
510-923Pacific BellLandline
510-924Lumen (Level 3)VoIP
510-925Bandwidth.comVoIP
510-926Verizon WirelessWireless
510-927Lumen (Level 3)VoIP
510-928AT&T MobilityWireless
510-929Bandwidth.comVoIP
510-930Peerless NetworkVoIP
510-931Lumen (Level 3)VoIP
510-932T-MobileWireless
510-933TPx CommunicationsLandline
510-934T-MobileWireless
510-935AT&T MobilityWireless
510-936Pacific BellLandline
510-937Bandwidth.comVoIP
510-938Metro by T-Mobile (MetroPCS)Wireless
510-939Bandwidth.comVoIP
510-940TPx CommunicationsLandline
510-941Comcast Phone Of CaliforniaLandline
510-942AT&T (Teleport Communications)Landline
510-943Lumen (Level 3)VoIP
510-944T-MobileWireless
510-945AT&T MobilityWireless
510-946AT&T MobilityWireless
510-947Onvoy (Sinch)VoIP
510-948Verizon Business (MCImetro)Landline
510-949Onvoy (Sinch)VoIP
510-951Verizon WirelessWireless
510-952Metro by T-Mobile (MetroPCS)Wireless
510-953AT&T MobilityWireless
510-954Onvoy (Sinch)VoIP
510-955Verizon Business (MCImetro)Landline
510-956Bandwidth.comVoIP
510-957Verizon Business (MCImetro)Landline
510-960AT&T LocalLandline
510-961Bandwidth.comVoIP
510-962Lumen (Level 3)VoIP
510-963AT&T MobilityWireless
510-964Pacific BellLandline
510-965Pacific BellLandline
510-966Onvoy Spectrum (Sinch)VoIP
510-967Metro by T-Mobile (MetroPCS)Wireless
510-968American Messaging (paging)Landline
510-969Lumen (Level 3)VoIP
510-970Pacific BellLandline
510-971AT&T (Teleport Communications)Landline
510-972Comcast Phone Of CaliforniaLandline
510-973T-MobileWireless
510-974Lumen (Level 3)VoIP
510-975Verizon WirelessWireless
510-976North County Communication CorporationLandline
510-977FracTELLandline
510-978Lumen (Level 3)VoIP
510-979Pacific BellLandline
510-980Verizon WirelessWireless
510-981Pacific BellLandline
510-982Verizon Business (MCImetro)Landline
510-983Bandwidth.comVoIP
510-984Lumen (Level 3)VoIP
510-985Pacific BellLandline
510-986Pacific BellLandline
510-987Pacific BellLandline
510-988T-MobileWireless
510-989Integrated Path CommunicationsLandline
510-990Onvoy (Sinch)VoIP
510-991Onvoy (Sinch)VoIP
510-992Bandwidth.comVoIP
510-993T-MobileWireless
510-994Bandwidth.comVoIP
510-995TPx CommunicationsLandline
510-996Lumen (Level 3)VoIP
510-997American Messaging (paging)Landline
510-998AT&T MobilityWireless
510-999Onvoy (Sinch)VoIP

Line type reflects the registry assignment; ported numbers can differ. Unknown 510 number calling? ActiveArmor® screens it before you ever look it up.

Cities & Communities in and around Area Code 510

Communities the 510 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
Alameda94502, 94501, 94621Fiber up to 5 GIG
Alamo94507, 94596, 94528Fiber up to 5 GIG
Albany94706, 94710, 94804Fiber up to 5 GIG
Antioch94509, 94531, 94561Fiber up to 5 GIG
Bay Point94565, 94519, 94520Fiber up to 5 GIG
Benicia94569, 94510, 94525Fiber up to 5 GIG
Berkeley94710, 94702, 94703Fiber up to 5 GIG
Blackhawk94506, 94588, 94582Fiber up to 5 GIG
Castro Valley94541, 94552, 94546Fiber up to 5 GIG
Colma94014, 94015, 94080Fiber up to 5 GIG
Concord94519, 94518, 94521Fiber up to 5 GIG
Corte Madera94925, 94964, 94939Fiber up to 5 GIG
Crockett94525, 94569, 94572Fiber up to 5 GIG
Daly City94014, 94015, 94132Fiber up to 5 GIG
Danville94526, 94528, 94583Fiber up to 5 GIG
Dublin94568, 94582, 94566Fiber up to 5 GIG
El Cerrito94530, 94805, 94707Fiber up to 5 GIG
Emeryville94608, 94710, 94607Fiber 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.

510 Area Code Map

Area code 510 serves Oakland and nearby communities in CA.

Map of area code 510 coverage in California↓  Printable PDF

Open the printable 510 map (PDF) · All California area codes · Home internet in Oakland

Counties Covered by the 510 Area Code

Santa Clara County
Share of combined population24%
Population1,936,259
Largest 510 cityMilpitas
Alameda County
Share of combined population21%
Population1,682,353
Largest 510 cityOakland
Contra Costa County
Share of combined population14%
Population1,165,927
Largest 510 cityAntioch
San Francisco County
Share of combined population11%
Population873,965
Largest 510 citySan Francisco

Counties are served in whole or in part; population is U.S. Census Bureau ACS 2023. The 510 also reaches parts of San Joaquin County, San Mateo County, Solano County, Marin County, Napa County.

The 510, explained

Area Code 510: More Than a Number in Oakland

In Oakland, the 510 is more than digits on a caller ID. It arrived in 1991, layered onto the 415 region, and it has meant Oakland and surrounding communities ever since — 785 carrier prefixes keep its lines busy today, and an established 510 number still says you’ve been here a while.

The map tells its own story: Oakland and surrounding communities, with 341 sharing the same streets today. Several codes, one local calling area, no long-distance between any of them — only the 510 came first.

Keeping a 510 matters here. An existing 510 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 341 instead — one more reason locals hold on to theirs.

Need a new local number? Shop plans Keep your 510: bring it to AT&T

Internet, wireless & stores in the 510

AT&T Home Internet in Area Code 510

AT&T home internet serves communities across area code 510, 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 Oakland ›

Pair it with wireless in an internet + wireless bundle. Run a business in the 510? AT&T Business Internet is available at many addresses.

Family streaming together on AT&T home internet
Fiber install day in the 510Check your address ›

Moving to Area Code 510?

Set up home internet in area code 510 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 510 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 510

AT&T’s 5G network covers most of area code 510. ActiveArmor® spam blocking is included with every unlimited plan, your 510 number stays yours, and great cell phone deals in Oakland are a tap away.

5G across the 510ActiveArmor® includedKeep your 510 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 510 number ›

Need a new 510 number? Ask when you activate a line: the 510 shares its territory with 341, so new lines may draw one of those codes, and porting an existing 510 number keeps it yours.

See the AT&T wireless coverage map for the 510 ›

Woman smiling at her phone on an Oakland street
Stay connected across OaklandShop wireless plans ›

AT&T Stores in Area Code 510

Looking for cell phone stores in area code 510? These stores answer on 510 numbers — walk in for switching, porting, upgrades and hands-on help:

Fremont AT&T Store Hub Store 39121 Fremont Blvd, Fremont+1 510-890-2797
Fremont AT&T Store Fremont Store 46579 Mission Blvd, Fremont+1 510-659-8488
Fremont AT&T Store Fremont 44029 Osgood Road, Fremont+1 510-353-3408
Cell phone stores in Oakland › All 55 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 OaklandFind your store ›

All AT&T Stores with 510 Numbers

Every store below answers on a 510 number. Tap any number to call.

19 AT&T stores with 510 numbers
CityStorePhone
AlamedaAT&T Store Landing+1 510-457-6574
BerkeleyAT&T Store Store 696+1 510-890-2789
Castro ValleyAT&T Store Castro Valley+1 510-954-6665
El CerritoAT&T Store Plaza Store+1 510-890-2791
EmeryvilleAT&T Store Bay St Store 820+1 510-890-2785
FairfieldAT&T Store Fairfield Mall+1 510-281-0088
FremontAT&T Store Fremont+1 510-902-6668
FremontAT&T Store Hub Store+1 510-890-2797
FremontAT&T Store Fremont+1 510-353-3408
FremontAT&T Store Fremont Store+1 510-659-8488
HaywardAT&T Store Hayward+1 510-581-8255
HaywardAT&T Store Southland 1+1 510-592-1601
OaklandAT&T Store Store 560+1 510-890-2795
OaklandAT&T Store Oakland Store+1 510-268-8388
PinoleAT&T Store Pinole+1 510-270-0177
RichmondAT&T Store Store+1 510-890-2783
San LeandroAT&T Store Village Marketplace+1 510-890-2793
San PabloAT&T Store San Pablo+1 510-470-1984
Union CityAT&T Store Store 538+1 510-890-2787

International Calling from Area Code 510

Calling abroad from area code 510? 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 510 calls most:MexicoPhilippinesChinaIndiaVietnam

Top places of birth among foreign-born residents of the 510’s counties, U.S. Census Bureau ACS 2023.

Calling abroad from a 510 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
Oakland calls the worldSee international plans ›

510 Area Code Quick Facts & Dialing

StateCalifornia
Time zonePacific
Overlays341share this territory
Established1991added to the 415 region
Dialing10 digitsrequired
Toll-free?Nogeographic code
Population8.06Mcounties served, Census 2023
Largest cityOakland+56 more ›

How to dial a 510 number

ScenarioFormatExample
Local call (within the region)510 + 7-digit number(510) 555-0100
Long distance (within the U.S.)1 + 510 + 7-digit number1 (510) 555-0100
Calling 510 from another country+1 510 + 7-digit number+1 510 555 0100
From a mobile phone(510) + 7-digit number(510) 555-0100

A Short History of Area Code 510

Added in 1991 to the 415 region, the 510 serves Oakland and surrounding communities.

1991Added to the 415 region
1998Territory split off as 925
2019First overlay: 341

Area Code 510 vs the related codes

CodeAddedTypeWhere it works
5101991OverlayOakland and surrounding communities
9251998SplitTerritory carved from the 510
3412019OverlaySame territory as the 510

Same rates, same local dialing: a number from any code in the region works exactly like a 510.

Nearby & Related Area Codes

925Split from the 510415Parent code650Also California408Also California916Also California

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

Area Code 510 FAQ

What area code is 510?
510 is the area code for Oakland, California and the surrounding communities. It appears at the front of every local 10-digit phone number in the area.
Where is area code 510?
Area code 510 serves Oakland, California and nearby communities including Alameda, Alamo, Albany. The full city list is in the cities table above.
Why did I get a text message from a 510 number?
The most common 510 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 510?
A 510 number usually means Oakland 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 510?
Pacific time. The live local time is shown at the top of this page.
Why am I getting calls from 510 numbers?
510 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 510 prefixes are drawing complaints right now.
Is 510 a toll-free number?
No. 510 is a geographic area code tied to Oakland, California. Toll-free calls come from 800, 833, 844, 855, 866, 877 and 888 numbers.
What’s the difference between 510 and 341?
341 is an overlay of 510: both cover the same Oakland area, and calls between them are local. New lines may get either code.
Which cities use area code 510?
The largest communities include Alameda, Alamo, Albany, Antioch, Bay Point. The full list is in the cities table above.
Does AT&T offer service in the 510?
Yes: home internet, wireless and retail stores across the 510. Availability is checked address by address.
Can I still get a 510 number?
Yes. Carriers in Oakland and across the 510 still issue 510 numbers on new lines, and you can port an existing 510 number to any carrier. Newer lines in the same area may also receive numbers from an overlay code.
Can I keep my 510 number if I move?
Yes. Phone numbers are portable: your 510 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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