The 831 Area Code (or Area Code 831) is located in the state of CA. Area Code 831 is one of the 269 3-digit telephone area codes in the USA. It covers roughly 723 thousand unique phone numbers and 1.88 million individuals near the city of Monterey
Area code 831 was put into service. Area code 831 was created from a split of area code 408.
Aptos, Aromas, Ben Lomond, Big Sur, Boulder Creek, Cantua Creek, Carmel, Carmel Valley, Castroville, Chualar, Felton, Gonzales, Greenfield, Hollister, King City, Marina, Monterey, Salinas, San Ardo, San Juan Bautista, Santa Cruz, Soledad, Tres Pinos, Watsonville.
| PREFIX | COUNTY | CITY | CARRIER | TYPE |
|---|---|---|---|---|
| 831-634 | San Benito | Hollister | Pacific Bell | Landline |
| 831-635 | San Benito | Hollister | Pacific Bell | Landline |
| 831-636 | San Benito | Hollister | Pacific Bell | Landline |
| 831-637 | San Benito | Hollister | Pacific Bell | Landline |
| 831-638 | San Benito | Hollister | Pacific Bell | Landline |
| 831-641 | Monterey | Monterey | Pacific Bell | Landline |
| 831-642 | Monterey | Monterey | Pacific Bell | Landline |
| 831-643 | Monterey | Monterey | Pacific Bell | Landline |
| 831-644 | Monterey | Monterey | Pacific Bell | Landline |
| 831-645 | Monterey | Monterey | Pacific Bell | Landline |
| 831-646 | Monterey | Monterey | Pacific Bell | Landline |
| 831-647 | Monterey | Monterey | Pacific Bell | Landline |
| 831-648 | Monterey | Monterey | Pacific Bell | Landline |
| 831-649 | Monterey | Monterey | Pacific Bell | Landline |
| 831-652 | Monterey | Salinas | Level 3 Communications, Llc - CA | Landline |
| 831-653 | Monterey | Salinas | O1 Communications, Inc. - CA | Landline |
| 831-655 | Monterey | Monterey | Pacific Bell | Landline |
| 831-656 | Monterey | Monterey | Pacific Bell | Landline |
| 831-657 | Monterey | Monterey | Pacific Bell | Landline |
| 831-658 | Monterey | Monterey | Pacific Bell | Landline |
| 831-659 | Monterey | Carmel Valley | Pacific Bell | Landline |
| 831-661 | Santa Cruz | Aptos | Pacific Bell | Landline |
| 831-662 | Santa Cruz | Aptos | Pacific Bell | Landline |
| 831-663 | Monterey | Salinas | Pacific Bell | Landline |
| 831-664 | Monterey | Salinas | Level 3 Communications, Llc - CA | Landline |
| 831-665 | Monterey | Salinas | Level 3 Communications, Llc - CA | Landline |
| 831-667 | Monterey | Big Sur | Pacific Bell | Landline |
| 831-673 | Monterey | Salinas | New Cingular Wireless Pcs, Llc | Wireless |
| 831-674 | Monterey | Greenfield | Pacific Bell | Landline |
| 831-675 | Monterey | Gonzales | Pacific Bell | Landline |
| 831-676 | Monterey | Salinas | At&t Local | Landline |
| 831-677 | Monterey | Salinas | Matrix Telecom, Llc. Sii Tnci - CA | Landline |
| 831-678 | Monterey | Soledad | Pacific Bell | Landline |
| 831-679 | Monterey | Chualar | Pacific Bell | Landline |
| 831-682 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - CA | Wireless |
| 831-684 | Santa Cruz | Aptos | Pacific Bell | Landline |
| 831-685 | Santa Cruz | Aptos | Pacific Bell | Landline |
| 831-687 | Santa Cruz | Aptos | Pacific Bell | Landline |
| 831-688 | Santa Cruz | Aptos | Pacific Bell | Landline |
| 831-689 | Santa Cruz | Aptos | Pacific Bell | Landline |
| 831-693 | San Benito | Paicines | Pinnacles Telephone Co. | Landline |
| 831-703 | San Francisco | San Francisco | Level 3 Telecom Of California, Lp - CA | Landline |
| 831-704 | San Francisco | San Francisco | Neutral Tandem-California, Llc - CA | Landline |
| 831-705 | Monterey | Salinas | U.s. Telepacific Corp. - CA | Landline |
| 831-706 | Santa Clara | Sunnyvale | Level 3 Telecom Of California, Lp - CA | Landline |
| 831-707 | Alameda | Oakland | Level 3 Telecom Of California, Lp - CA | Landline |
| 831-708 | San Francisco | San Francisco | O1 Communications, Inc. - CA | Landline |
| 831-709 | San Francisco | San Francisco | Level 3 Communications, Llc - CA | Landline |
| 831-710 | Monterey | Salinas | New Cingular Wireless Pcs, Llc | Wireless |
| 831-713 | San Francisco | San Francisco | O1 Communications, Inc. - CA | Landline |
| 831-717 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - CA | Landline |
| 831-718 | Monterey | Salinas | Mci Worldcom Communications, Inc., CA | Landline |
| 831-722 | Santa Cruz | Watsonville | Pacific Bell | Landline |
| 831-724 | Santa Cruz | Watsonville | Pacific Bell | Landline |
| 831-726 | Monterey | Aromas | Pacific Bell | Landline |
| 831-728 | Santa Cruz | Watsonville | Pacific Bell | Landline |
| 831-731 | Monterey | Salinas | O1 Communications, Inc. - CA | Landline |
| 831-732 | Monterey | Salinas | Level 3 Communications, Llc - CA | Landline |
| 831-737 | Monterey | Salinas | U.s. Telepacific Corp. - CA | Landline |
| 831-740 | Alameda | Oakland | Teleport Communications Group - San Francisco | Landline |
| 831-741 | Monterey | Salinas | Level 3 Communications, Llc - CA | Landline |
| 831-744 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - CA | Landline |
| 831-747 | Monterey | Salinas | At&t Corp. | Landline |
| 831-750 | Santa Clara | San Jose | Sprint Spectrum L.p. | Wireless |
| 831-751 | Monterey | Salinas | Pacific Bell | Landline |
| 831-753 | Monterey | Salinas | Pacific Bell | Landline |
| 831-754 | Monterey | Salinas | Pacific Bell | Landline |
| 831-755 | Monterey | Salinas | Pacific Bell | Landline |
| 831-756 | Monterey | Salinas | Utility Telecom Group, Llc - CA | Landline |
| 831-757 | Monterey | Salinas | Pacific Bell | Landline |
| Phone Number 831-229-4700 |
USAGE Wireless |
City Salinas |
Operate Read more about who called from 8312294700 |
Update Time Mar-26-2026 |
| Phone Number 831-215-8010 |
USAGE Wireless |
City Salinas |
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Update Time Mar-26-2026 |
| Phone Number 831-257-6888 |
USAGE Wireless |
City Salinas |
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Update Time Mar-26-2026 |
| Phone Number 831-461-3073 |
USAGE Landline |
City Scotts Valley |
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Update Time Mar-26-2026 |
| Phone Number 831-219-2171 |
USAGE Landline |
City San Jose |
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Update Time Mar-26-2026 |
| Phone Number 831-744-8459 |
USAGE Landline |
City Salinas |
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Update Time Mar-26-2026 |
| Phone Number 831-741-6312 |
USAGE Landline |
City Salinas |
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Update Time Mar-26-2026 |
| Phone Number 831-230-6487 |
USAGE Landline |
City Salinas |
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Update Time Mar-26-2026 |
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