Calls from 831 normally come from California — 26 cities across 4 counties, in the Pacific time zone. Our archive holds 628 caller reports on 223 numbers in this area code.
An area code only tells you the region. Search the full number to see listings and reports for it.
Area code 831 serves California, covering Salinas, Santa Cruz, Monterey, Watsonville, Hollister. In total our directory records 800 phone prefixes in this area code, spread across 26 cities and 4 counties.
The area code sits in the Pacific time zone (UTC-08:00), where the local time is now approximately 1:59 PM. The oldest prefix on record here entered service on 1998-08-14, and the newest on 2015-09-21.
Of the prefixes with a known line type, 23% are wireless and 77% landline — 80 mobile against 261 fixed-line prefixes.
California is highlighted below. Schematic map — each square is one state or territory.
Telephone companies holding prefixes in this area code, ranked by how many they operate.
Places served by this area code, with the number of prefixes assigned to each.
Aggregated from 628 reports covering 223 distinct numbers in this area code (2015–2017 archive).
Unknown306Telemarketer142Debt Collector23Prank Call15Prank Caller12Survey7SMS4Non-profit Organization3
831-480-632639 reports831-498-451330 reports831-387-172628 reports831-221-690020 reports831-661-807816 reports831-480-860015 reports831-480-860115 reports831-555-252512 reports
Names people entered when reporting a call from this area code.
a woman, no name given ×21Horizon Pharmacy ×6Don't know ×3Chiro Care/Doctors Network ×3US PHARMACY ×3ssi ×3GGS Air ×3Online Pharmacy ×3Us treasury ×3Out of Area ×3? ×3unavailable ×3
Each number below was reported by someone who received a call from it. “Reported as” is the name the caller gave or that the recipient recognised — what people wrote down, not verified ownership.
| Number | Reports | Call type | Reported as | Last report |
|---|---|---|---|---|
| 831-480-6326 | 39 | Debt Collector, Telemarketer, Unknown | a recording, no name given / a woman, no name given / a woman, recorded message / An automative service | 2016-05-01 |
| 831-498-4513 | 30 | Telemarketer, Unknown | — | 2016-04-25 |
| 831-387-1726 | 28 | Telemarketer, Unknown | Horizon Pharmacy / US PHARMACY | 2016-04-26 |
| 831-221-6900 | 20 | Prank Caller, Telemarketer, Unknown | Online Pharmacy / Online Pharmacy, US Pharmacy, Canadian Pharmacy / San Ardo, CA / Selling rx medications | 2016-04-19 |
| 831-661-8078 | 16 | Prank Caller, Telemarketer, Unknown | Great Rate Insurance | 2016-04-17 |
| 831-480-8600 | 15 | Telemarketer, Unknown | Chiro Care / Doctors Netwirk | 2016-03-06 |
| 831-480-8601 | 15 | Telemarketer, Unknown | Chiro Care / Chiro Care/Doctors Network | 2016-04-18 |
| 831-555-2525 | 12 | Prank Call, Telemarketer, Unknown | Dir Asst / Scam / SCAM(831)555-2525/(831)424-4137 DoNOTAnswer | 2016-04-19 |
| 831-480-2388 | 11 | Unknown | ??? / iphone dialed this number itself while in lock mode / Plantronics / Plantronics Pro Headset | 2016-04-23 |
| 831-217-1159 | 11 | Telemarketer, Unknown | ???? / Boulder Creek CA it says / Daniel Garcia &- Armando Vargas / UNK | 2016-04-23 |
| 831-316-1072 | 11 | Prank Caller, Telemarketer, Unknown | — | 2016-03-29 |
| 831-915-9455 | 10 | Telemarketer, Unknown | — | 2016-02-20 |
| 831-612-3098 | 10 | Unknown | Aptos / Aptos CA / suntel / TELE TEL | 2016-04-19 |
| 831-920-4134 | 9 | Political Call, Prank Call, Survey | "Democratic National Party" / "Monterey" / "unknown name" / Democratic National Party | 2016-05-02 |
| 831-443-4435 | 9 | Telemarketer, Unknown | — | 2016-02-29 |
| 831-291-9997 | 9 | Prank Call, Telemarketer | Air Duct Cleaning / Duct Cleaning / GGS Air / Internal Revenue Services (?) | 2016-04-16 |
| 831-250-8070 | 9 | Debt Collector | Department of Legal Affairs / dept of indian affairs / dept of legal affairs / officer Austin Black 1632 badge # | 2016-04-10 |
| 831-217-4305 | 8 | Prank Call, Telemarketer, Unknown | Did not disclose / Survey / Unk | 2016-04-25 |
| 831-320-0000 | 8 | Prank Call, Unknown | ? / Ca | 2016-04-12 |
| 831-205-3346 | 7 | Non-profit Organization, Telemarketer | California Police Youth Charities / Don't know / NA | 2016-04-08 |
| 831-435-1638 | 7 | Debt Collector | Delt of Legal Affairs / dept of legal affairs / Dept. Legal Affairs / Dept. Legal Affairs US Treasury (not valid) | 2016-04-10 |
| 831-618-2123 | 7 | Telemarketer, Unknown | County Star | 2016-04-22 |
| 831-321-7346 | 7 | Prank Call, Telemarketer | +1 (831) 321-7346 / unknown in salinas santa cruz area | 2016-04-05 |
| 831-232-1179 | 7 | SMS, Telemarketer | Extended vehicle warranty / Vehicle Extended Warrantee / Vehicle Processing Center / Vehicle Processing Department | 2016-03-31 |
| 831-316-9795 | 6 | Prank Call, Telemarketer | David gray claims to be IRS / David Grey / US Treasury | 2016-02-18 |
| 831-219-7607 | 6 | Debt Collector, Unknown | Mike Anderson? | 2016-04-23 |
| 831-219-7600 | 6 | Debt Collector, Unknown | erick h | 2016-01-14 |
| 831-612-3099 | 6 | Telemarketer, Unknown | G-TEL / GTEL / Pakistani Unlimited / Pakistanis who need real jobs. | 2016-02-16 |
| 831-417-0134 | 5 | Telemarketer, Unknown | — | 2016-04-18 |
| 831-321-7347 | 5 | Prank Call | ? / Name Unavailable / No idea | 2016-05-01 |
| 831-480-8621 | 5 | Unknown | CALPAL | 2016-03-02 |
| 831-555-4137 | 5 | Survey | "Dir. asst." on ID / ?????????????? / Dir Assist CA / validaty research | 2016-03-25 |
| 831-275-5959 | 5 | Debt Collector | "Kim Preston" / Kim Preston / Kimberley Preston | 2016-03-23 |
| 831-263-1566 | 5 | Telemarketer, Unknown | US Pharmacy | 2016-02-12 |
| 831-221-6700 | 4 | Telemarketer, Unknown | Timeshare | 2016-01-26 |
| 831-301-4001 | 4 | Debt Collector, Unknown | Jack Austin / John Miller | 2016-04-23 |
| 831-227-2784 | 4 | Telemarketer | Insurance Center / United ins. and Allied ins. / united insurance | 2016-01-24 |
| 831-430-4715 | 4 | Prank Call, Telemarketer | Just Calls/Won't Leave Message / Name varies - From Windows PC to Geek Squad / no response | 2016-04-06 |
| 831-603-0250 | 4 | Telemarketer, Unknown | OMH USA Health Net | 2016-04-18 |
| 831-678-3967 | 4 | — | (831) 678-4203 Soledad, CA / Global Tel link / no one / Soledad Prison | 2016-03-29 |
| 831-350-0576 | 4 | Survey | ssi | 2016-04-20 |
| 831-431-8964 | 4 | Unknown | ??? / California Call / Santa Cruz Scammer | 2016-03-06 |
| 831-899-4607 | 3 | Prank Caller, Unknown | — | 2016-02-10 |
| 831-217-4164 | 3 | Telemarketer | ? / Out of Area | 2016-04-22 |
| 831-425-7435 | 3 | Unknown | fax machine? | 2016-01-31 |
| 831-531-2114 | 3 | Telemarketer, Unknown | — | 2016-04-08 |
| 831-856-7456 | 3 | Telemarketer, Unknown | — | 2015-11-06 |
| 831-718-0356 | 3 | Telemarketer, Unknown | Monterey CA | 2016-04-20 |
| 831-755-6699 | 3 | Unknown | DIRECTV / HSBC / HSBC Card SUCS | 2016-03-11 |
| 831-219-7605 | 3 | Debt Collector, Unknown | — | 2016-03-30 |
| 831-221-6996 | 3 | Telemarketer | Healthy Man Pharmaceuticals / US PHARMACY | 2016-03-07 |
| 831-337-1504 | 3 | Telemarketer | Did not say / US Insurance Online (SCAM) | 2016-02-04 |
| 831-740-3312 | 3 | Debt Collector, Unknown | David Clark / nick jackson | 2016-04-21 |
| 831-774-3141 | 2 | Telemarketer | — | 2016-04-14 |
| 831-603-0760 | 2 | Unknown | — | 2016-02-11 |
| 831-227-2971 | 2 | Unknown | — | 2016-04-05 |
| 831-531-3360 | 2 | Telemarketer | Telemarketer for Google services | 2016-03-22 |
| 831-300-1737 | 2 | Telemarketer | big sur / Max Energy | 2016-02-05 |
| 831-219-7252 | 2 | Debt Collector | cash net | 2016-03-19 |
| 831-376-4067 | 2 | Prank Call | CALIFORNIA CALL / unknown name | 2016-02-12 |
Showing the 60 most-reported of 223 numbers on record for this area code.
Our business records list 40,894 companies reachable on a 831 number, across 403 cities and 3,871 lines of business. If an unexpected call came from this area code, it may well be one of them.
Single-family Housing Construction 1,167Beauty Shops 610Services, Nec 530Business Consulting, Nec 501Business Services, Nec 496Design Services 443Offices And Clinics Of Medical Doctors 391Real Estate Brokers And Agents 351Painting And Paper Hanging 312Eating Places 312Electrical Work 311General Automotive Repair Shops 294Legal Services 289Insurance Agents, Brokers, And Service 279General Farms, Primarily Crop 276
Headcount and founding year are as recorded in the business register, and a business may hold a number outside the state it operates in.
| Business | Phone | City | Industry | Staff | Founded |
|---|---|---|---|---|---|
| Lockheed Martin Corporation | 831-425-6000 | Santa Cruz | Aircraft | 5,600 | — |
| Universal Services of America, LP | 831-751-3230 | Salinas | Brokers' Services | 5,008 | — |
| Pebble Beach Company | 831-647-7500 | Pebble Beach | Hotels And Motels | 2,500 | 2002 |
| SALINAS VALLEY MEMORIAL HEALTH CARE SYSTEM | 831-757-4333 | Salinas | General Medical And Surgical Hospitals | 2,000 | 1999 |
| Palo Alto Medical Foundation STA Cruz | 831-458-5670 | Santa Cruz | Physical Medicine, Physician/surgeon | 2,000 | 2004 |
| Community Hospital Foundation Inc | 831-625-4830 | Monterey | Hospital Management | 1,650 | 1955 |
| Community Hospital of The Monterey Peninsula | 831-624-5311 | Monterey | Intermediate Care Facilities | 1,500 | 1928 |
| Dignity Health | 831-462-7700 | Santa Cruz | Medical Centers | 1,500 | — |
| Pajaro Valley Unified School District | 831-786-2100 | Watsonville | Public Elementary And Secondary Schools | 1,279 | 1965 |
| CB North, LLC | 831-786-1642 | Watsonville | General Farms, Primarily Crop | 1,000 | 2004 |
| Quinn Group, Inc. | 831-758-8461 | Salinas | Construction And Mining Machinery | 1,000 | — |
| Earthbound Farm, LLC | 831-623-7880 | San Juan Bautista | Vegetable Packing Services | 995 | 1995 |
| Cabrillo Community College District Financing Corporation | 831-479-6100 | Aptos | Community College | 980 | 1959 |
| County of Santa Cruz | 831-454-2100 | Santa Cruz | Executive Offices | 976 | 1850 |
| Vce Company, LLC | 831-247-1660 | Marlborough | Computer Storage Devices | 935 | — |
| Naval Postgraduate School | 831-656-7893 | Monterey | University | 900 | 1970 |
| Pemer Packing Co., Inc | 831-758-8586 | Salinas | Labor Contractors (employment Agency) | 800 | 1992 |
| County of Monterey | 831-647-7611 | Salinas | General Medical And Surgical Hospitals | 700 | — |
| Monterey Peninsula College | 831-646-4010 | Monterey | Community College | 660 | 1945 |
| Natividad Hospital, Inc | 831-515-8866 | Salinas | General Medical And Surgical Hospitals | 659 | 1950 |
| Watsonville Community Hospital | 831-724-4741 | Watsonville | General Medical And Surgical Hospitals | 650 | 1986 |
| County of Monterey | 831-755-8500 | Salinas | Social Service Center | 600 | — |
| Natural Selection Foods Manufacturing LLC | 831-623-7880 | Yuma | Fresh Fruits And Vegetables | 539 | 2013 |
| County of Santa Cruz | 831-425-0112 | Santa Cruz | Government - Administration Of Social And Human Resources | 516 | — |
| Red Blossom Sales, Inc. | 831-751-9169 | Salinas | General Farms, Primarily Crop | 503 | — |
| Monterey Mushrooms, Inc. | 831-728-8300 | Royal Oaks | Mushrooms, Grown Under Cover | 501 | — |
| Santa Cruz, County of | 831-454-4130 | Santa Cruz | Administration Of Social And Manpower Programs | 500 | — |
| True Leaf Farms, LLC | 831-623-4667 | San Juan Bautista | Manufacturing - Vegetables, Dried Or Dehydrated (except Freeze-dried) | 500 | 2002 |
| Hyatt Hotels Corporation | 831-372-1234 | Monterey | Hotels And Motels | 500 | — |
| Southern Monterey County Memorial Hospital Inc | 831-385-7100 | King City | General Medical And Surgical Hospitals | 495 | 1962 |
| Hartnell College | 831-755-6700 | Salinas | Community College | 490 | 1920 |
| Aviza, Inc. | 831-439-6464 | Scotts Valley | Merchandise Liquidators | 456 | 2003 |
| River Ranch Fresh Foods, LLC | 831-758-1390 | Salinas | Vegetables, Fresh | 450 | 2010 |
| Mann Packing Co., Inc. | 831-422-7405 | Salinas | Vegetable Packing Services | 450 | 1945 |
| Ameri-Kleen | 831-722-8888 | Watsonville | Building Maintenance Services, Nec | 450 | — |
| Seagate Technology LLC | 831-439-3697 | Aptos | Manufacturing - Disk Drives, Computer | 416 | — |
| CHUALAR LABOR CONTRACTORS | 831-679-2307 | Chualar | Farm Labor Contractors | 400 | 1970 |
| Jlg Harvesting, Inc. | 831-422-7871 | Salinas | Crop Preparation Services For Market | 400 | — |
| Tanimura & Antle, Inc. | 831-424-6100 | Baldwin Park | Vegetable Packing Services | 400 | — |
| Harmony Foods Corporation | 831-457-3200 | Santa Cruz | Manufacturing - Vitamin, Nutrient, And Hematinic Preparations For Human Use | 400 | 2013 |
Salinas 7,592Santa Cruz 7,243Monterey 4,003Watsonville 3,142Hollister 2,086Aptos 1,930Carmel 1,632Seaside 1,260Capitola 1,188Pacific Grove 1,167Soquel 1,120Scotts Valley 1,108Marina 795Felton 627King City 625Carmel Valley 557Boulder Creek 487Soledad 406Ben Lomond 402Castroville 387
10 listings from the YPState archive use this area code.
Postal codes recorded against prefixes in this area code.
93450936089390193905939069390793908939209392393924939259392693927939309393393940939439395393960950039500495005950069501095012950189502395043950459506095062950649506595066950739507595076
Each prefix (the first three digits after the area code) is assigned to a carrier and a service area. Showing the first 200 of 800.
| Prefix | City | County | Carrier | Type | In service |
|---|---|---|---|---|---|
| 831-200 | Monterey | Monterey | Peerless Network Of California, Llc | Landline | 2014-11-26 |
| 831-201 | — | — | — | — | — |
| 831-202 | — | — | — | — | — |
| 831-203 | Salinas | Monterey | American Messaging Services, Llc | Wireless | 1998-08-14 |
| 831-204 | Monterey | Monterey | Ymax Communications Corp. | Landline | 2008-04-02 |
| 831-205 | Hollister | San Benito | Teleport Communications Group - San Francisco | Landline | 2009-10-08 |
| 831-206 | Salinas | Monterey | Cellco Partnership Dba Verizon Wireless | Wireless | 1999-10-13 |
| 831-207 | Hollister | San Benito | Sprint Spectrum L.p. | Wireless | 2001-09-12 |
| 831-208 | — | — | — | — | — |
| 831-209 | — | — | — | — | — |
| 831-210 | Monterey | Monterey | T-Mobile Usa, Inc. | Wireless | 2002-01-16 |
| 831-211 | — | — | — | — | — |
| 831-212 | Santa Cruz | Santa Cruz | Sprint Spectrum L.p. | Wireless | 2000-01-14 |
| 831-213 | — | — | — | — | — |
| 831-214 | Salinas | Monterey | New Cingular Wireless Pcs, Llc | Wireless | 1998-11-20 |
| 831-215 | — | — | — | — | — |
| 831-216 | Felton | Santa Cruz | Teleport Communications Group - San Francisco | Landline | 1999-10-13 |
| 831-217 | Boulder Creek | Santa Cruz | Teleport Communications Group - San Francisco | Landline | 1999-10-13 |
| 831-218 | Ben Lomond | Santa Cruz | Teleport Communications Group - San Francisco | Landline | 1999-10-13 |
| 831-219 | Aptos | Santa Cruz | Teleport Communications Group - San Francisco | Landline | 1999-10-13 |
| 831-220 | — | — | — | — | — |
| 831-221 | San Ardo | Monterey | O1 Communications, Inc. | Landline | 2001-03-03 |
| 831-222 | Felton | Santa Cruz | U.s. Telepacific Corp. | Landline | 2000-08-20 |
| 831-223 | Soledad | Monterey | Pac - West Telecomm, Inc. | Landline | 2001-12-05 |
| 831-224 | Monterey | Monterey | T-Mobile Usa, Inc. | Wireless | 2001-12-14 |
| 831-225 | Salinas | Monterey | Centurylink Communications Llc | Landline | 2015-06-23 |
| 831-226 | Santa Cruz | Santa Cruz | Sbc Internet Services, Inc. | Landline | 2015-07-16 |
| 831-227 | Santa Cruz | Santa Cruz | Cellco Partnership Dba Verizon Wireless | Landline | 2001-03-03 |
| 831-228 | — | — | Charter Fiberlink Ca-Cco, Llc | — | 2015-09-21 |
| 831-229 | Salinas | Monterey | New Cingular Wireless Pcs, Llc | Wireless | 1999-10-13 |
| 831-230 | — | — | — | — | — |
| 831-231 | — | — | — | — | — |
| 831-232 | Salinas | Monterey | O1 Communications, Inc. | Landline | 2001-06-30 |
| 831-233 | Salinas | Monterey | Level 3 Communications, Llc | Landline | 2001-06-30 |
| 831-234 | Santa Cruz | Santa Cruz | Cellco Partnership Dba Verizon Wireless | Wireless | 1999-10-13 |
| 831-235 | Salinas | Monterey | Cellco Partnership Dba Verizon Wireless | Wireless | 1999-10-13 |
| 831-236 | Monterey | Monterey | Cellco Partnership Dba Verizon Wireless | Wireless | 1999-10-13 |
| 831-237 | Soledad | Monterey | O1 Communications, Inc. | Landline | 2000-08-20 |
| 831-238 | Pebble Beach | Monterey | New Cingular Wireless Pcs, Llc | Wireless | 2000-10-31 |
| 831-239 | Santa Cruz | Santa Cruz | New Cingular Wireless Pcs, Llc | Wireless | 2000-01-14 |
| 831-240 | Salinas | Monterey | T-Mobile Usa, Inc. | Landline | 2001-06-30 |
| 831-241 | Salinas | Monterey | At&t Local | Landline | 2001-06-30 |
| 831-242 | Monterey | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-243 | — | — | — | — | 1999-10-13 |
| 831-244 | Big Sur | Monterey | Bandwidth.com Clec, Llc | Landline | 2000-08-20 |
| 831-245 | Hollister | San Benito | O1 Communications, Inc. | Landline | 2000-08-20 |
| 831-246 | Felton | Santa Cruz | Cellco Partnership Dba Verizon Wireless | Wireless | 2000-01-14 |
| 831-247 | Santa Cruz | Santa Cruz | Cellco Partnership Dba Verizon Wireless | Wireless | 2001-06-30 |
| 831-248 | — | — | — | — | — |
| 831-249 | Big Sur | Monterey | Sbc Internet Services, Inc. | Landline | 2009-12-14 |
| 831-250 | Carmel | Monterey | O1 Communications, Inc. | Landline | 2001-06-30 |
| 831-251 | Capitola | Santa Cruz | New Cingular Wireless Pcs, Llc | Wireless | 1999-07-22 |
| 831-252 | Felton | Santa Cruz | New Cingular Wireless Pcs, Llc | Wireless | 1999-10-13 |
| 831-253 | — | — | — | — | 2007-10-12 |
| 831-254 | Watsonville | Santa Cruz | New Cingular Wireless Pcs, Llc | Wireless | 1999-10-13 |
| 831-255 | Santa Cruz | Santa Cruz | North County Communications Corp. | Landline | 2000-01-14 |
| 831-256 | Salinas | Monterey | Cellco Partnership Dba Verizon Wireless | Wireless | 2015-04-10 |
| 831-257 | — | — | — | — | — |
| 831-258 | — | — | — | — | — |
| 831-259 | — | — | — | — | — |
| 831-260 | — | — | — | — | — |
| 831-261 | Salinas | Monterey | New Cingular Wireless Pcs, Llc | Wireless | 1999-10-13 |
| 831-262 | Salinas | Monterey | Cellco Partnership Dba Verizon Wireless | Wireless | 2000-06-13 |
| 831-263 | King City | Monterey | O1 Communications, Inc. | Landline | 2000-08-20 |
| 831-264 | Salinas | Monterey | O1 Communications, Inc. | Landline | 2000-08-20 |
| 831-265 | Hollister | San Benito | Sbc Internet Services, Inc. | Landline | 2008-04-02 |
| 831-266 | — | — | — | — | 2008-04-19 |
| 831-267 | Big Sur | Monterey | Mpower Networks Services Inc. | Landline | 2006-12-14 |
| 831-268 | — | — | — | — | — |
| 831-269 | Salinas | Monterey | Teleport Communications Group - San Francisco | Landline | 2007-06-21 |
| 831-270 | — | — | — | — | — |
| 831-271 | — | — | — | — | 1999-10-13 |
| 831-272 | Salinas | Monterey | Cf Communications, Llc Dba Telekenex | Landline | 2007-10-12 |
| 831-273 | — | — | — | — | — |
| 831-274 | Watsonville | Santa Cruz | Broadwing Communications, Llc | Landline | 2001-03-03 |
| 831-275 | Monterey | Monterey | Bandwidth.com Clec, Llc | Landline | 2008-10-23 |
| 831-276 | — | — | — | — | — |
| 831-277 | Monterey | Monterey | Cellco Partnership Dba Verizon Wireless | Wireless | 2000-01-14 |
| 831-278 | Felton | Santa Cruz | Cellco Partnership Dba Verizon Wireless | Wireless | 2000-01-14 |
| 831-279 | — | — | — | — | — |
| 831-280 | — | — | — | — | — |
| 831-281 | Santa Cruz | Santa Cruz | American Messaging Services, Llc | Wireless | 1999-10-13 |
| 831-282 | Watsonville | Santa Cruz | American Messaging Services, Llc | Wireless | 1999-10-13 |
| 831-283 | Pebble Beach | Monterey | American Messaging Services, Llc | Wireless | 1999-10-13 |
| 831-284 | Tres Pinos | San Benito | American Messaging Services, Llc | Wireless | 1999-10-13 |
| 831-285 | King City | Monterey | American Messaging Services, Llc | Wireless | 1999-10-13 |
| 831-286 | Greenfield | Monterey | American Messaging Services, Llc | Wireless | 1999-10-13 |
| 831-287 | Salinas | Monterey | Ymax Communications Corp. | Landline | 2008-12-16 |
| 831-288 | Watsonville | Santa Cruz | Charter Fiberlink Ca-Cco, Llc | Landline | 2009-06-11 |
| 831-289 | — | — | — | — | — |
| 831-290 | Gonzales | Monterey | U.s. Telepacific Corp. | Landline | 2009-06-26 |
| 831-291 | Santa Cruz | Santa Cruz | Cellco Partnership Dba Verizon Wireless | Wireless | 2014-04-07 |
| 831-292 | — | — | — | — | — |
| 831-293 | Carmel | Monterey | Tw Telecom Of California Lp | Landline | 2008-06-25 |
| 831-294 | — | — | — | — | — |
| 831-295 | Santa Cruz | Santa Cruz | T-Mobile Usa, Inc. | Wireless | 2001-12-14 |
| 831-296 | Salinas | Monterey | Level 3 Communications, Llc | Wireless | 2010-07-12 |
| 831-297 | Hollister | San Benito | T-Mobile Usa, Inc. | Wireless | 2001-12-14 |
| 831-298 | Salinas | Monterey | O1 Communications, Inc. | Landline | 2001-03-03 |
| 831-299 | Tres Pinos | San Benito | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-300 | Big Sur | Monterey | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-301 | Salinas | Monterey | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-302 | San Ardo | Monterey | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-303 | San Ardo | Monterey | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-304 | Greenfield | Monterey | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-305 | Gonzales | Monterey | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-306 | Salinas | Monterey | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-307 | Salinas | Monterey | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-308 | Salinas | Monterey | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-309 | Carmel | Monterey | Pac - West Telecomm, Inc. | Landline | 1999-10-13 |
| 831-310 | — | — | — | — | — |
| 831-311 | — | — | — | — | — |
| 831-312 | — | — | — | — | 2010-08-31 |
| 831-313 | Hollister | San Benito | Charter Fiberlink Ca-Cco, Llc | Landline | 2009-06-11 |
| 831-314 | — | — | — | — | — |
| 831-315 | — | — | — | — | — |
| 831-316 | Santa Cruz | Santa Cruz | Allegiance Telecom, Inc. | Landline | 1999-10-13 |
| 831-317 | — | — | — | — | — |
| 831-318 | — | — | — | — | — |
| 831-319 | Watsonville | Santa Cruz | Allegiance Telecom, Inc. | Landline | 2001-04-17 |
| 831-320 | Salinas | Monterey | Cellco Partnership Dba Verizon Wireless | Wireless | 1999-05-10 |
| 831-321 | — | — | — | — | — |
| 831-322 | — | — | — | — | — |
| 831-323 | — | — | — | — | — |
| 831-324 | Monterey | Monterey | Comcast Phone Of California, Llc | Landline | 2006-02-14 |
| 831-325 | Santa Cruz | Santa Cruz | Sprint Spectrum L.p. | Wireless | 2001-04-25 |
| 831-326 | — | — | — | — | — |
| 831-327 | — | — | — | — | — |
| 831-328 | — | — | — | — | — |
| 831-329 | — | — | — | — | — |
| 831-330 | — | — | — | — | — |
| 831-331 | Santa Cruz | Santa Cruz | New Cingular Wireless Pcs, Llc | Wireless | 1999-10-13 |
| 831-332 | Santa Cruz | Santa Cruz | New Cingular Wireless Pcs, Llc | Wireless | 1999-07-22 |
| 831-333 | Monterey | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-334 | Santa Cruz | Santa Cruz | New Cingular Wireless Pcs, Llc | Wireless | 1999-07-22 |
| 831-335 | Felton | Santa Cruz | Pacific Bell | Landline | 1998-08-14 |
| 831-336 | Ben Lomond | Santa Cruz | Pacific Bell | Landline | 1998-08-14 |
| 831-337 | Boulder Creek | Santa Cruz | Mci Worldcom Communications, Inc., Ca | Landline | 1998-08-14 |
| 831-338 | Boulder Creek | Santa Cruz | Pacific Bell | Landline | 1998-08-14 |
| 831-339 | — | — | — | — | — |
| 831-340 | — | — | — | — | — |
| 831-341 | — | — | — | — | — |
| 831-342 | — | — | — | — | — |
| 831-343 | — | — | — | — | — |
| 831-344 | — | — | — | — | 2001-03-03 |
| 831-345 | Santa Cruz | Santa Cruz | Cellco Partnership Dba Verizon Wireless | Wireless | 2001-11-13 |
| 831-346 | Santa Cruz | Santa Cruz | T-Mobile Usa, Inc. | Wireless | 2014-09-23 |
| 831-347 | — | — | — | — | — |
| 831-348 | — | — | — | — | — |
| 831-349 | — | — | — | — | — |
| 831-350 | Tres Pinos | San Benito | Level 3 Communications, Llc | Landline | 2006-05-11 |
| 831-351 | — | — | — | — | — |
| 831-352 | — | — | — | — | — |
| 831-353 | — | — | — | — | — |
| 831-354 | — | — | — | — | — |
| 831-355 | — | — | — | — | — |
| 831-356 | — | — | — | — | — |
| 831-357 | — | — | — | — | — |
| 831-358 | — | — | — | — | — |
| 831-359 | Santa Cruz | Santa Cruz | Level 3 Communications, Llc | Landline | 1999-05-10 |
| 831-360 | — | — | — | — | — |
| 831-361 | — | — | — | — | — |
| 831-362 | — | — | — | — | — |
| 831-363 | — | — | — | — | — |
| 831-364 | — | — | — | — | — |
| 831-365 | — | — | — | — | — |
| 831-366 | — | — | — | — | — |
| 831-367 | — | — | — | — | — |
| 831-368 | — | — | — | — | — |
| 831-369 | — | — | — | — | — |
| 831-370 | — | — | — | — | — |
| 831-371 | — | — | — | — | — |
| 831-372 | Monterey | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-373 | Monterey | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-374 | — | — | — | — | — |
| 831-375 | Monterey | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-376 | — | — | — | — | — |
| 831-377 | — | — | — | — | — |
| 831-378 | — | — | — | — | — |
| 831-379 | — | — | — | — | — |
| 831-380 | — | — | — | — | — |
| 831-381 | — | — | — | — | — |
| 831-382 | San Ardo | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-383 | Monterey | Monterey | Metro Pcs, Inc. | Wireless | 2001-09-13 |
| 831-384 | Marina | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-385 | King City | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-386 | King City | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-387 | King City | Monterey | Pac - West Telecomm, Inc. | Landline | 1998-08-14 |
| 831-388 | — | — | — | — | — |
| 831-389 | Paicines | San Benito | Pinnacles Telephone Co. | Landline | 1998-08-14 |
| 831-390 | — | — | — | — | — |
| 831-391 | — | — | — | — | — |
| 831-392 | Monterey | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-393 | Monterey | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-394 | Monterey | Monterey | Pacific Bell | Landline | 1998-08-14 |
| 831-395 | — | — | — | — | — |
| 831-396 | — | — | — | — | — |
| 831-397 | — | — | — | — | — |
| 831-398 | — | — | — | — | — |
| 831-399 | — | — | — | — | — |
Area code 831 serves California, including Salinas. It covers 26 cities across 4 counties, in the Pacific time zone.
Area code 831 observes Pacific time (UTC-08:00). The current local time is approximately 1:59 PM.
The earliest phone prefix recorded in area code 831 was put in service on 1998-08-14. The most recent was activated on 2015-09-21.
Our directory holds 628 caller reports covering 223 numbers in area code 831. A valid area code does not guarantee a legitimate caller, since numbers can be spoofed.
The largest places served by area code 831 are Salinas, Santa Cruz, Monterey, Watsonville, Hollister, Aptos, Felton, Tres Pinos. In total it covers 26 cities across 4 counties.
A number in this area code is written +1 (831) XXX-XXXX in international format, or (831) XXX-XXXX domestically. The +1 is the country code shared by the United States, Canada and other NANP members.
Yes. Caller ID was built without verification, so a caller can display almost any number. Scammers often pick a number matching the area code of the person they are calling — known as neighbour spoofing — because a local-looking call is answered more often. The US industry response, STIR/SHAKEN, lets carriers sign and verify caller ID, but coverage is still incomplete.
Almost always neighbour spoofing: the caller fabricates a number sharing your area code, and sometimes your prefix, so the call looks like it comes from someone nearby. A matching area code is not evidence that the caller is local.
Report unwanted calls to the FTC at reportfraud.ftc.gov, and add your number to the Do Not Call registry at donotcall.gov. Include the caller ID number even if you believe it was spoofed — regulators use the pattern of reports, not the individual number.
Different parts of this page carry different levels of reliability. Here is what each one rests on.
About the caller reports: these were submitted by members of the public and are not verified. They record what a caller ID displayed and what the recipient made of the call — they are not proof of who owns a number, and because caller ID can be faked, a reported number may have nothing to do with the person actually calling.
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