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California · Pacific Time  Updated July 2026

Area Code 831

Salinas and surrounding communities

Area code 831 serves Salinas, California and communities including Aptos, Aromas, Ben Lomond 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 831 number? The code is legit, but spoofing is common. Look up the prefix ›
StateCalifornia
Largest citySalinas
Local time1:10 PM PT
Nearby408 · 650 · 510
Since1998
Call now?Good time to call back

Who Called Me from Area Code 831?

Quick answerA 831 call usually comes from Salinas 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 831 prefixes, right on this page.
  • Curious who issued a number? Every 831 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 831 prefixes this month
PrefixReported patternReport volume
(831) 777-XXXXRobocall-heavy
(831) 215-XXXXRobocall-heavy
(831) 999-XXXXRobocall-heavy
(831) 471-XXXXRobocall-heavy
(831) 837-XXXXRobocall-heavy

147 unwanted-call reports naming 831 numbers in FTC Do Not Call complaint data, July 2–17, 2026. Consumer-reported and unverified.

Block spam calls in the 831, 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 831 a Scam?

No. 831 is a legitimate Salinas area code.

It’s carved from the 408 in 1998 and serves Salinas 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 408 in 1998; 404 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 831 numbers

The most common area code 831 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 831

Caller ID is easy to forge. Spoofing fakes the number a call displays. The real owner of that 831 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 831 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 831 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.

831 Area Code Prefix & Carrier Lookup

The three digits after the area code identify the carrier a number was issued to. All 404 assigned 831 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 831 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.

404 prefixes · updated monthly
PrefixCarrierLine type
831-200Peerless NetworkVoIP
831-201AT&T MobilityWireless
831-202Verizon Business (MCImetro)Landline
831-203NusoLandline
831-204Onvoy (Sinch)VoIP
831-205AT&T (Teleport Communications)Landline
831-206Verizon WirelessWireless
831-207T-MobileWireless
831-208Verizon WirelessWireless
831-210T-MobileWireless
831-212Metro by T-Mobile (MetroPCS)Wireless
831-214AT&T MobilityWireless
831-215Hd CarrierLandline
831-216AT&T (Teleport Communications)Landline
831-217AT&T (Teleport Communications)Landline
831-218AT&T (Teleport Communications)Landline
831-219AT&T (Teleport Communications)Landline
831-220VonageVoIP
831-221Ip HorizonLandline
831-222TPx CommunicationsLandline
831-223Lumen (Level 3)VoIP
831-224T-MobileWireless
831-225Lumen (CenturyLink)Landline
831-226At&T EnterprisesLandline
831-227Verizon WirelessWireless
831-228Spectrum (Charter IP)Landline
831-229AT&T MobilityWireless
831-230TelnyxLandline
831-231Onvoy Spectrum (Sinch)VoIP
831-232Ip HorizonLandline
831-233Lumen (Level 3)VoIP
831-234Verizon WirelessWireless
831-235Verizon WirelessWireless
831-236Verizon WirelessWireless
831-237Ip HorizonLandline
831-238AT&T MobilityWireless
831-239AT&T MobilityWireless
831-240T-MobileWireless
831-241AT&T LocalLandline
831-242Pacific BellLandline
831-243Csc WirelessWireless
831-244Bandwidth.comVoIP
831-245Verizon WirelessWireless
831-246Verizon WirelessWireless
831-247Verizon WirelessWireless
831-249At&T EnterprisesLandline
831-250Ip HorizonLandline
831-251AT&T MobilityWireless
831-252AT&T MobilityWireless
831-253TPx CommunicationsLandline
831-254AT&T MobilityWireless
831-255North County Communication CorporationLandline
831-256Verizon WirelessWireless
831-257Onvoy (Sinch)VoIP
831-258AT&T MobilityWireless
831-259TPx CommunicationsLandline
831-260AT&T MobilityWireless
831-261AT&T MobilityWireless
831-262Verizon WirelessWireless
831-263Ip HorizonLandline
831-264Bandwidth.comVoIP
831-265At&T EnterprisesLandline
831-266T-MobileWireless
831-267TPx CommunicationsLandline
831-268Onvoy (Sinch)VoIP
831-269AT&T (Teleport Communications)Landline
831-270TPx CommunicationsLandline
831-271TelnyxLandline
831-272Onvoy (Sinch)VoIP
831-273Onvoy (Sinch)VoIP
831-274Lumen (Level 3)VoIP
831-275Bandwidth.comVoIP
831-276TelnyxLandline
831-277Verizon WirelessWireless
831-278Verizon WirelessWireless
831-279Boost MobileLandline
831-280CommioLandline
831-281Verizon WirelessWireless
831-282Ip HorizonLandline
831-283CommioLandline
831-284AT&T MobilityWireless
831-285Bandwidth.comVoIP
831-286Onvoy (Sinch)VoIP
831-287Bandwidth.comVoIP
831-288Spectrum (Charter IP)Landline
831-289Comcast Phone Of CaliforniaLandline
831-290TPx CommunicationsLandline
831-291Verizon WirelessWireless
831-292AT&T MobilityWireless
831-293Lumen (Level 3)VoIP
831-294AT&T MobilityWireless
831-295T-MobileWireless
831-296Lumen (Level 3)VoIP
831-297T-MobileWireless
831-298Onvoy (Sinch)VoIP
831-299Lumen (Level 3)VoIP
831-300Lumen (Level 3)VoIP
831-301Peerless NetworkVoIP
831-302Lumen (Level 3)VoIP
831-303Peerless NetworkVoIP
831-304Peerless NetworkVoIP
831-305Lumen (Level 3)VoIP
831-306Lumen (Level 3)VoIP
831-307Lumen (Level 3)VoIP
831-308Bandwidth.comVoIP
831-309Bandwidth.comVoIP
831-312Csc VoiceLandline
831-313Spectrum (Charter IP)Landline
831-314ShelcommLandline
831-315Peerless NetworkVoIP
831-316Verizon Business (MCImetro)Landline
831-317Leap TelecomLandline
831-318Onvoy (Sinch)VoIP
831-319Verizon Business (MCImetro)Landline
831-320Verizon WirelessWireless
831-321AT&T MobilityWireless
831-322Onvoy (Sinch)VoIP
831-324Comcast Phone Of CaliforniaLandline
831-325Metro by T-Mobile (MetroPCS)Wireless
831-326AT&T MobilityWireless
831-327AT&T MobilityWireless
831-328Onvoy (Sinch)VoIP
831-329NusoLandline
831-330Onvoy Spectrum (Sinch)VoIP
831-331AT&T MobilityWireless
831-332AT&T MobilityWireless
831-333Pacific BellLandline
831-334AT&T MobilityWireless
831-335Pacific BellLandline
831-336Pacific BellLandline
831-337Verizon Business (MCImetro)Landline
831-338Pacific BellLandline
831-339AT&T MobilityWireless
831-340Verizon WirelessWireless
831-345Verizon WirelessWireless
831-346T-MobileWireless
831-348FracTELLandline
831-350Lumen (Level 3)VoIP
831-353Onvoy (Sinch)VoIP
831-356FracTELLandline
831-359Lumen (Level 3)VoIP
831-366Ton80 CommunicationsLandline
831-372Pacific BellLandline
831-373Pacific BellLandline
831-375Pacific BellLandline
831-382Pacific BellLandline
831-383Metro by T-Mobile (MetroPCS)Wireless
831-384Pacific BellLandline
831-385Pacific BellLandline
831-386Pacific BellLandline
831-387Bandwidth.comVoIP
831-388Onvoy (Sinch)VoIP
831-389Pinnacles Tel.Landline
831-392Pacific BellLandline
831-393Pacific BellLandline
831-394Pacific BellLandline
831-400Voip InnovationsVoIP
831-401Lumen (Level 3)VoIP
831-402AT&T MobilityWireless
831-406T-MobileWireless
831-417Onvoy (Sinch)VoIP
831-419AT&T MobilityWireless
831-420Pacific BellLandline
831-421Pacific BellLandline
831-422Pacific BellLandline
831-423Pacific BellLandline
831-424Pacific BellLandline
831-425Pacific BellLandline
831-426Pacific BellLandline
831-427Pacific BellLandline
831-428Metro by T-Mobile (MetroPCS)Wireless
831-429Pacific BellLandline
831-430Pacific BellLandline
831-431Pacific BellLandline
831-432FracTELLandline
831-435Pacific BellLandline
831-438Pacific BellLandline
831-439Pacific BellLandline
831-440Pacific BellLandline
831-442Pacific BellLandline
831-443Pacific BellLandline
831-444Pacific BellLandline
831-449Pacific BellLandline
831-453At&T EnterprisesLandline
831-454Pacific BellLandline
831-455Pacific BellLandline
831-457Pacific BellLandline
831-458Pacific BellLandline
831-459Pacific BellLandline
831-460Pacific BellLandline
831-461Pacific BellLandline
831-462Pacific BellLandline
831-464Pacific BellLandline
831-465Pacific BellLandline
831-466Pacific BellLandline
831-468Exiant CommunicationsLandline
831-469Pacific BellLandline
831-471Pacific BellLandline
831-475Pacific BellLandline
831-476Pacific BellLandline
831-477Pacific BellLandline
831-479Pacific BellLandline
831-480Onvoy (Sinch)VoIP
831-484Pacific BellLandline
831-498Ip HorizonLandline
831-500Metro by T-Mobile (MetroPCS)Wireless
831-502Pacific BellLandline
831-508Ip HorizonLandline
831-512T-MobileWireless
831-515TPx CommunicationsLandline
831-521AT&T MobilityWireless
831-524AT&T MobilityWireless
831-525Lumen (Level 3)VoIP
831-529FracTELLandline
831-531Verizon Business (MCImetro)Landline
831-532Onvoy (Sinch)VoIP
831-533Verizon Business (MCImetro)Landline
831-534Verizon Business (MCImetro)Landline
831-535Verizon Business (MCImetro)Landline
831-536Verizon Business (MCImetro)Landline
831-537Verizon WirelessWireless
831-539T-MobileWireless
831-540Verizon WirelessWireless
831-566Verizon WirelessWireless
831-572Utility Telecom GroupLandline
831-574TPx CommunicationsLandline
831-576Onvoy (Sinch)VoIP
831-578AT&T MobilityWireless
831-580Ip HorizonLandline
831-582Pacific BellLandline
831-583Pacific BellLandline
831-585Metro by T-Mobile (MetroPCS)Wireless
831-586Ip HorizonLandline
831-587FracTELLandline
831-588Verizon WirelessWireless
831-593Spectrum (Charter IP)Landline
831-594AT&T MobilityWireless
831-595AT&T MobilityWireless
831-596AT&T MobilityWireless
831-597Peerless NetworkVoIP
831-600TPx CommunicationsLandline
831-601Verizon WirelessWireless
831-603Onvoy (Sinch)VoIP
831-604Onvoy (Sinch)VoIP
831-607Ip HorizonLandline
831-609Onvoy (Sinch)VoIP
831-610Onvoy (Sinch)VoIP
831-612Lumen (Level 3)VoIP
831-613Bandwidth.comVoIP
831-618Onvoy (Sinch)VoIP
831-620Pacific BellLandline
831-621Lumen (Level 3)VoIP
831-622Pacific BellLandline
831-623Pacific BellLandline
831-624Pacific BellLandline
831-625Pacific BellLandline
831-626Pacific BellLandline
831-627Pacific BellLandline
831-628Pacific BellLandline
831-630Pacific BellLandline
831-632Pacific BellLandline
831-633Pacific BellLandline
831-634Pacific BellLandline
831-635Pacific BellLandline
831-636Pacific BellLandline
831-637Pacific BellLandline
831-638Pacific BellLandline
831-641Pacific BellLandline
831-642Pacific BellLandline
831-643Pacific BellLandline
831-644Pacific BellLandline
831-645Pacific BellLandline
831-646Pacific BellLandline
831-647Pacific BellLandline
831-648Pacific BellLandline
831-649Pacific BellLandline
831-652Lumen (Level 3)VoIP
831-653Ip HorizonLandline
831-655Pacific BellLandline
831-656Pacific BellLandline
831-657Pacific BellLandline
831-658Pacific BellLandline
831-659Pacific BellLandline
831-661Pacific BellLandline
831-662Pacific BellLandline
831-663Pacific BellLandline
831-664Lumen (Level 3)VoIP
831-665Lumen (Level 3)VoIP
831-666Onvoy (Sinch)VoIP
831-667Pacific BellLandline
831-673AT&T MobilityWireless
831-674Pacific BellLandline
831-675Pacific BellLandline
831-676AT&T LocalLandline
831-677Matrix TelecomLandline
831-678Pacific BellLandline
831-679Pacific BellLandline
831-682Verizon WirelessWireless
831-684Pacific BellLandline
831-685Pacific BellLandline
831-687Pacific BellLandline
831-688Pacific BellLandline
831-689Pacific BellLandline
831-693Pinnacles Tel.Landline
831-699FracTELLandline
831-703Lumen (Level 3)VoIP
831-704Onvoy (Sinch)VoIP
831-705TPx CommunicationsLandline
831-706Lumen (Level 3)VoIP
831-707Lumen (Level 3)VoIP
831-708Bandwidth.comVoIP
831-709Lumen (Level 3)VoIP
831-710AT&T MobilityWireless
831-713Verizon WirelessWireless
831-717TwilioVoIP
831-718Verizon Business (MCImetro)Landline
831-722Pacific BellLandline
831-724Pacific BellLandline
831-726Pacific BellLandline
831-728Pacific BellLandline
831-731Ip HorizonLandline
831-732Lumen (Level 3)VoIP
831-737TPx CommunicationsLandline
831-740AT&T (Teleport Communications)Landline
831-741Lumen (Level 3)VoIP
831-744Verizon WirelessWireless
831-747At&T EnterprisesLandline
831-750T-MobileWireless
831-751Pacific BellLandline
831-753Pacific BellLandline
831-754Pacific BellLandline
831-755Pacific BellLandline
831-756Utility Telecom GroupLandline
831-757Pacific BellLandline
831-758Pacific BellLandline
831-759Pacific BellLandline
831-760Metro by T-Mobile (MetroPCS)Wireless
831-761Pacific BellLandline
831-763Pacific BellLandline
831-768Pacific BellLandline
831-769Pacific BellLandline
831-770Pacific BellLandline
831-771Pacific BellLandline
831-772Pacific BellLandline
831-774Metro by T-Mobile (MetroPCS)Wireless
831-775Pacific BellLandline
831-776Metro by T-Mobile (MetroPCS)Wireless
831-777Onvoy (Sinch)VoIP
831-778Lumen (Level 3)VoIP
831-783Pacific BellLandline
831-784Pacific BellLandline
831-785Metro by T-Mobile (MetroPCS)Wireless
831-786Pacific BellLandline
831-788FracTELLandline
831-789Matrix TelecomLandline
831-794Metro by T-Mobile (MetroPCS)Wireless
831-796Pacific BellLandline
831-800Skye Telecom LLC dba SkyetelLandline
831-801Verizon WirelessWireless
831-808Onvoy Spectrum (Sinch)VoIP
831-809Verizon WirelessWireless
831-818Verizon WirelessWireless
831-821Verizon WirelessWireless
831-824AT&T (Teleport Communications)Landline
831-830Onvoy (Sinch)VoIP
831-833CommioLandline
831-837Ton80 CommunicationsLandline
831-840AT&T MobilityWireless
831-842FracTELLandline
831-844Ton80 CommunicationsLandline
831-850Onvoy (Sinch)VoIP
831-851Onvoy (Sinch)VoIP
831-854Matrix TelecomLandline
831-855Peerless NetworkVoIP
831-856Bandwidth.comVoIP
831-859Hd CarrierLandline
831-867CommioLandline
831-869Metro by T-Mobile (MetroPCS)Wireless
831-877FracTELLandline
831-8808X8Landline
831-881Wide VoiceLandline
831-883Pacific BellLandline
831-884Pacific BellLandline
831-886NusoLandline
831-887Terra Nova TelecomLandline
831-888Onvoy (Sinch)VoIP
831-889Utility Telecom GroupLandline
831-899Pacific BellLandline
831-900Onvoy (Sinch)VoIP
831-901WavenationLandline
831-902Metro by T-Mobile (MetroPCS)Wireless
831-905AT&T MobilityWireless
831-915AT&T MobilityWireless
831-917AT&T MobilityWireless
831-920Lumen (Level 3)VoIP
831-921Lumen (Level 3)VoIP
831-931Onvoy Spectrum (Sinch)VoIP
831-946FracTELLandline
831-948Utility Telecom GroupLandline
831-970T-MobileWireless
831-975Comcast Phone Of CaliforniaLandline
831-996Ip HorizonLandline
831-998Verizon Business (MCImetro)Landline
831-999Peerless NetworkVoIP

Line type reflects the registry assignment; ported numbers can differ. Unknown 831 number calling? ActiveArmor® screens it before you ever look it up.

Cities & Communities in and around Area Code 831

Communities the 831 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
Aptos95003, 95010, 95073Fiber up to 5 GIG
Aromas95004, 95045, 93907Internet Air
Ben Lomond95005, 95018, 95041Internet Air
Bonny Doon95060, 95041, 95005Fiber up to 5 GIG
Boulder Creek95007, 95006, 95005Internet Air
Brookdale95007, 95005, 95018Internet Air
Capitola95010, 95062, 95065Fiber up to 5 GIG
Carmel By The Sea—Internet Air
Castroville95012, 95039, 93907Internet Air
Chualar93925, 93908, 93926Internet Air
Corralitos95076, 95019, 95003Fiber up to 5 GIG
Davenport95060, 95017, 95064Check address
Del Rey Oaks93940, 93943, 93955Fiber up to 5 GIG
Dublin94568, 94582, 94566Fiber up to 5 GIG
Felton95041, 95018, 95060Internet Air
Freedom95019, 95076, 95003Fiber up to 5 GIG
Gonzales93926, 93925Check address
Greenfield93307, 93304, 93309Check address

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.

831 Area Code Map

Area code 831 serves Salinas and nearby communities in CA.

Map of area code 831 coverage in California↓  Printable PDF

Open the printable 831 map (PDF) · All California area codes · Home internet in Salinas

Counties Covered by the 831 Area Code

Alameda County
Share of combined population49%
Population1,682,353
Largest 831 cityDublin
Kern County
Share of combined population27%
Population909,235
Largest 831 cityGreenfield
Monterey County
Share of combined population13%
Population439,035
Largest 831 citySalinas
Santa Cruz County
Share of combined population8%
Population270,861
Largest 831 cityCapitola

Counties are served in whole or in part; population is U.S. Census Bureau ACS 2023. The 831 also reaches parts of San Benito County, Amador County.

The 831, explained

Area Code 831: More Than a Number in Salinas

In Salinas, the 831 is more than digits on a caller ID. It arrived in 1998, carved out of the 408, and it has meant Salinas and surrounding communities ever since — 404 carrier prefixes keep its lines busy today, and an established 831 number still says you’ve been here a while.

The map tells its own story: Salinas 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 831 matters here. An existing 831 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 831: bring it to AT&T

Internet, wireless & stores in the 831

AT&T Home Internet in Area Code 831

AT&T home internet serves communities across area code 831, 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 Salinas ›

Pair it with wireless in an internet + wireless bundle. Run a business in the 831? AT&T Business Internet is available at many addresses.

Family streaming together on AT&T home internet
Fiber install day in the 831Check your address ›

Moving to Area Code 831?

Set up home internet in area code 831 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 831 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 831

AT&T’s 5G network covers most of area code 831. ActiveArmor® spam blocking is included with every unlimited plan, your 831 number stays yours, and great cell phone deals in Salinas are a tap away.

5G across the 831ActiveArmor® includedKeep your 831 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 831 number ›

Need a new 831 number? Ask when you activate a line, and porting an existing 831 number keeps it yours.

See the AT&T wireless coverage map for the 831 ›

Woman smiling at her phone on an Salinas street
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AT&T Stores in Area Code 831

Looking for cell phone stores in area code 831? These stores answer on 831 numbers — walk in for switching, porting, upgrades and hands-on help:

Salinas AT&T Store Harden Ranch Store 1620 North Main Street, Salinas+1 831-264-5785
Monterey Park AT&T Store Monterey Park 2200 S Atlantic Blvd, Monterey Park+1 831-665-6344
Hollister AT&T Store Hollister 1740 Airline Hwy, Hollister+1 831-636-8255
Cell phone stores in Salinas › All 17 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.

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All AT&T Stores with 831 Numbers

Every store below answers on a 831 number. Tap any number to call.

8 AT&T stores with 831 numbers
CityStorePhone
HollisterAT&T Store Hollister+1 831-636-8255
MontereyAT&T Store Monterey, Del Monte Center+1 831-264-5783
Monterey ParkAT&T Store Monterey Park+1 831-665-6344
SalinasAT&T Store Harden Ranch Store+1 831-264-5785
Sand CityAT&T Store Sand City+1 831-393-3360
Santa CruzAT&T Store Santa Cruz+1 831-457-8255
Scotts ValleyAT&T Store Scotts Valley+1 831-346-6942
WatsonvilleAT&T Store Watsonville Store+1 831-264-5787

International Calling from Area Code 831

Calling abroad from area code 831? 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 831 calls most:MexicoPhilippinesChinaIndiaVietnam

Top places of birth among foreign-born residents of the 831’s counties, U.S. Census Bureau ACS 2023.

Calling abroad from a 831 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.

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831 Area Code Quick Facts & Dialing

StateCalifornia
Time zonePacific
OverlaysNonethe 831 stands alone
Established1998split from the 408
Dialing10 digits7-digit local calls may still work
Toll-free?Nogeographic code
Population3.41Mcounties served, Census 2023
Largest citySalinas+38 more ›

How to dial a 831 number

ScenarioFormatExample
Local call (within the region)831 + 7-digit number(831) 555-0100
Long distance (within the U.S.)1 + 831 + 7-digit number1 (831) 555-0100
Calling 831 from another country+1 831 + 7-digit number+1 831 555 0100
From a mobile phone(831) + 7-digit number(831) 555-0100

A Short History of Area Code 831

Created in 1998 as a split from the 408, the 831 has meant Salinas and surrounding communities ever since. No splits or overlays have divided its territory since.

1998Split from the 408

In service since 1998, with no overlay on its territory today.

Nearby & Related Area Codes

408Parent code650Also California510Also California925Also California415Also California

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

Area Code 831 FAQ

What area code is 831?
831 is the area code for Salinas, California and the surrounding communities. It appears at the front of every local 10-digit phone number in the area.
Where is area code 831?
Area code 831 serves Salinas, California and nearby communities including Aptos, Aromas, Ben Lomond. The full city list is in the cities table above.
Why did I get a text message from a 831 number?
The most common 831 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 831?
A 831 number usually means Salinas 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 831?
Pacific time. The live local time is shown at the top of this page.
Why am I getting calls from 831 numbers?
831 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 831 prefixes are drawing complaints right now.
Is 831 a toll-free number?
No. 831 is a geographic area code tied to Salinas, California. Toll-free calls come from 800, 833, 844, 855, 866, 877 and 888 numbers.
When was area code 831 created?
Area code 831 entered service in 1998 and still covers Salinas and the surrounding California communities today. The full timeline is in the history section above.
Which cities use area code 831?
The largest communities include Aptos, Aromas, Ben Lomond, Bonny Doon, Boulder Creek. The full list is in the cities table above.
Does AT&T offer service in the 831?
Yes: home internet, wireless and retail stores across the 831. Availability is checked address by address.
Can I still get a 831 number?
Yes. Carriers in Salinas and across the 831 still issue 831 numbers on new lines, and you can port an existing 831 number to any carrier.
Can I keep my 831 number if I move?
Yes. Phone numbers are portable: your 831 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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