The 831 area code is a telephone area code serving a small region of California. To start a free reverse phone lookup, simply enter the full 10-digit number (including the 831 area code) below and access available caller information such as name, address, and more.
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The 831 area code covers Big Sur, Monterey Bay, the Salinas Valley, and the southwestern Santa Cruz Mountains.
Area code 831 was created in 1998 from area code 408.
Area code 831 is a General Purpose Code which was placed in service on January 1, 1947.
Our reverse phone lookup will analyze the three-digit prefix of any 831 area code phone number and will show which telecommunications company and rate center it was initially assigned to. This prefix code data may help to determine the U.S. carrier, California geographic region, and local calling area associated with the phone number.
| Company | Number of Prefixes |
|---|---|
| PACIFIC BELL | 118 |
| NEW CINGULAR WIRELESS PCS, LLC | 23 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 21 |
| SPRINT SPECTRUM, L.P. | 13 |
| O1 COMMUNICATIONS, INC. - CA | 9 |
| LEVEL 3 COMMUNICATIONS, LLC - CA | 5 |
| T-MOBILE USA, INC. | 4 |
| LEVEL 3 TELECOM OF CALIFORNIA, LP - CA | 3 |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA | 3 |
| ONVOY, LLC - CA | 3 |
| AT&T - LOCAL | 2 |
| AT&T CORP. | 2 |
| COMCAST IP PHONE, LLC | 2 |
| MATRIX TELECOM, LLC. S/I/I TNCI - CA | 2 |
| TELEPORT COMMUNICATIONS AMERICA, LLC - CA | 2 |
| U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS | 2 |
| AMERICAN MESSAGING SERVICES, LLC | 1 |
| BANDWIDTH.COM CLEC, LLC - CA | 1 |
| CHARTER FIBERLINK CA-CCO, LLC - CA | 1 |
| METROPCS, INC. | 1 |
| PEERLESS NETWORK OF CALIFORNIA, LLC - CA | 1 |
| PINNACLES TEL. CO. | 1 |
| TWILIO INTERNATIONAL, INC. | 1 |
| US TELEPACIFIC CORP. - CA | 1 |
| UTILITY TELECOM GROUP, LLC - CA | 1 |
| WAVENATION, LLC | 1 |
| XO CALIFORNIA, INC. | 1 |
| YMAX COMMUNICATIONS CORP. - CA | 1 |
| Rate Center | Number of Prefixes |
|---|---|
| SANTA CRUZ | 54 |
| SALINAS | 52 |
| MONTEREY | 46 |
| WATSONVL | 17 |
| HOLLISTER | 13 |
| APTOS | 9 |
| CARMEL | 8 |
| BEN LOMOND | 5 |
| BOULDERCRK | 2 |
| CASTROVL | 2 |
| CHUALAR | 2 |
| FELTON | 2 |
| KING CITY | 2 |
| SAN JUAN | 2 |
| SOLEDAD | 2 |
| BIG SUR | 1 |
| CARMEL VLY | 1 |
| GONZALES | 1 |
| GREENFIELD | 1 |
| PINNACLES | 1 |
| SAN ARDO | 1 |
| SAN LUCAS | 1 |
| TRES PINOS | 1 |
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