Area Code 831 phone numbers
State: California
In service since: 1998
Landlines: 287
Wireless prefixes: 75
Carriers: 36
Counties: 8
ZIP codes: 46
Major cities: Salinas, San Francisco, Monterey, Santa Cruz, Oakland
Area Code 831 has 351 prefixes
| Prefix | County | City | Carrier |
|---|---|---|---|
| 1-831-200 | Monterey | Monterey | Peerless Network Of California, Llc - Ca |
| 1-831-201 | Santa Clara | Santa Clara | New Cingular Wireless Pcs, Llc |
| 1-831-203 | Monterey | Salinas | American Messaging Services, Llc |
| 1-831-204 | Monterey | Monterey | Ymax Communications Corp. - Ca |
| 1-831-205 | Monterey | Monterey | Teleport Communications Group - San Francisco |
| 1-831-206 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-207 | Monterey | Salinas | Sprint Spectrum L.p. |
| 1-831-210 | Monterey | Salinas | T-mobile Usa, Inc. |
| 1-831-212 | Alameda | Oakland | Sprint Spectrum L.p. |
| 1-831-214 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-216 | San Francisco | San Francisco | Teleport Communications Group - San Francisco |
| 1-831-217 | San Francisco | San Francisco | Teleport Communications Group - San Francisco |
| 1-831-218 | San Francisco | San Francisco | Teleport Communications Group - San Francisco |
| 1-831-219 | Santa Clara | San Jose | Teleport Communications Group - San Francisco |
| 1-831-221 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-222 | San Francisco | San Francisco | U.s. Telepacific Corp. - Ca |
| 1-831-223 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-224 | Monterey | Salinas | T-mobile Usa, Inc. |
| 1-831-225 | Monterey | Salinas | Centurylink Communications Llc |
| 1-831-226 | San Francisco | San Francisco | At&t Corp. |
| 1-831-227 | Solano | Fairfield | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-228 | San Francisco | San Francisco | Charter Fiberlink Ca-cco, Llc - Ca |
| 1-831-229 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-232 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-233 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-234 | Solano | Fairfield | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-235 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-236 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-237 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-238 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-239 | Santa Clara | Santa Clara | New Cingular Wireless Pcs, Llc |
| 1-831-240 | Monterey | Salinas | T-mobile Usa, Inc. |
| 1-831-241 | Monterey | Salinas | At&t Local |
| 1-831-242 | Monterey | Monterey | Pacific Bell |
| 1-831-244 | Monterey | Monterey | Bandwidth.com Clec, Llc - Ca |
| 1-831-245 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-246 | Solano | Fairfield | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-247 | Solano | Fairfield | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-250 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-251 | Santa Clara | Santa Clara | New Cingular Wireless Pcs, Llc |
| 1-831-252 | Santa Clara | Santa Clara | New Cingular Wireless Pcs, Llc |
| 1-831-254 | Santa Clara | Santa Clara | New Cingular Wireless Pcs, Llc |
| 1-831-255 | San Francisco | San Francisco | North County Communications Corp. - Ca |
| 1-831-256 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-258 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-261 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-262 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-263 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-264 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-265 | Monterey | Salinas | At&t Corp. |
| 1-831-267 | Monterey | Salinas | Mpower Networks Services Inc. - Ca |
| 1-831-269 | Monterey | Salinas | Teleport Communications Group - San Francisco |
| 1-831-272 | Monterey | Salinas | Cf Communications, Llc Dba Telekenex - Ca |
| 1-831-274 | Santa Clara | San Jose | Broadwing Communications, Llc - Ca |
| 1-831-275 | Monterey | Monterey | Bandwidth.com Clec, Llc - Ca |
| 1-831-276 | Monterey | Salinas | T-mobile Usa, Inc. |
| 1-831-277 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-278 | Solano | Fairfield | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-281 | San Francisco | San Francisco | American Messaging Services, Llc |
| 1-831-282 | Alameda | Oakland | American Messaging Services, Llc |
| 1-831-283 | Monterey | Salinas | American Messaging Services, Llc |
| 1-831-284 | Monterey | Salinas | American Messaging Services, Llc |
| 1-831-285 | Monterey | Salinas | American Messaging Services, Llc |
| 1-831-286 | Monterey | Salinas | American Messaging Services, Llc |
| 1-831-287 | Monterey | Monterey | Ymax Communications Corp. - Ca |
| 1-831-288 | San Francisco | San Francisco | Charter Fiberlink Ca-cco, Llc - Ca |
| 1-831-290 | Monterey | Monterey | U.s. Telepacific Corp. - Ca |
| 1-831-291 | Solano | Fairfield | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-293 | Monterey | Salinas | Level 3 Telecom Of California, Lp - Ca |
| 1-831-295 | Alameda | Oakland | T-mobile Usa, Inc. |
| 1-831-296 | Monterey | Monterey | Level 3 Communications, Llc - Ca |
| 1-831-297 | Monterey | Salinas | T-mobile Usa, Inc. |
| 1-831-298 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-299 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-300 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-301 | Monterey | Monterey | Peerless Network Of California, Llc - Ca |
| 1-831-302 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-303 | Monterey | Monterey | Peerless Network Of California, Llc - Ca |
| 1-831-304 | Monterey | Monterey | Peerless Network Of California, Llc - Ca |
| 1-831-305 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-306 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-307 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-308 | Monterey | Monterey | Bandwidth.com Clec, Llc - Ca |
| 1-831-309 | Monterey | Monterey | Bandwidth.com Clec, Llc - Ca |
| 1-831-313 | Monterey | Salinas | Charter Fiberlink Ca-cco, Llc - Ca |
| 1-831-315 | Monterey | Monterey | Peerless Network Of California, Llc - Ca |
| 1-831-316 | San Francisco | San Francisco | Allegiance Telecom, Inc. - Ca |
| 1-831-318 | San Francisco | San Francisco | Neutral Tandem-california, Llc - Ca |
| 1-831-319 | Alameda | Oakland | Allegiance Telecom, Inc. - Ca |
| 1-831-320 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-322 | San Francisco | San Francisco | Neutral Tandem-california, Llc - Ca |
| 1-831-324 | Monterey | Salinas | Comcast Phone Of California, Llc - Ca |
| 1-831-325 | Alameda | Oakland | Sprint Spectrum L.p. |
| 1-831-331 | Solano | Fairfield | New Cingular Wireless Pcs, Llc |
| 1-831-332 | Santa Clara | Santa Clara | New Cingular Wireless Pcs, Llc |
| 1-831-333 | Monterey | Monterey | Pacific Bell |
| 1-831-334 | Santa Clara | Santa Clara | New Cingular Wireless Pcs, Llc |
| 1-831-335 | Santa Cruz | Felton | Pacific Bell |
| 1-831-336 | Santa Cruz | Ben Lomond | Pacific Bell |
| 1-831-337 | Santa Clara | San Jose | Mci Worldcom Communications, Inc., Ca |
| 1-831-338 | Santa Cruz | Boulder Creek | Pacific Bell |
| 1-831-345 | Solano | Fairfield | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-346 | San Francisco | San Francisco | T-mobile Usa, Inc. |
| 1-831-350 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-353 | San Francisco | San Francisco | Neutral Tandem-california, Llc - Ca |
| 1-831-359 | Solano | Fairfield | Level 3 Communications, Llc - Ca |
| 1-831-372 | Monterey | Monterey | Pacific Bell |
| 1-831-373 | Monterey | Monterey | Pacific Bell |
| 1-831-375 | Monterey | Monterey | Pacific Bell |
| 1-831-382 | Monterey | San Lucas | Pacific Bell |
| 1-831-383 | Monterey | Salinas | Metro Pcs, Inc. |
| 1-831-384 | Monterey | Marina | Pacific Bell |
| 1-831-385 | Monterey | King City | Pacific Bell |
| 1-831-386 | Monterey | King City | Pacific Bell |
| 1-831-387 | Monterey | Monterey | Bandwidth.com Clec, Llc - Ca |
| 1-831-389 | San Benito | Paicines | Pinnacles Telephone Co. |
| 1-831-392 | Monterey | Seaside | Pacific Bell |
| 1-831-393 | Monterey | Seaside | Pacific Bell |
| 1-831-394 | Monterey | Seaside | Pacific Bell |
| 1-831-400 | San Francisco | San Francisco | Cf Communications, Llc Dba Telekenex - Ca |
| 1-831-401 | Santa Clara | San Jose | Broadwing Communications, Llc - Ca |
| 1-831-402 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-406 | Alameda | Oakland | T-mobile Usa, Inc. |
| 1-831-417 | Monterey | Monterey | Peerless Network Of California, Llc - Ca |
| 1-831-418 | San Francisco | San Francisco | American Messaging Services, Llc |
| 1-831-419 | Santa Clara | Santa Clara | New Cingular Wireless Pcs, Llc |
| 1-831-420 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-421 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-422 | Monterey | Salinas | Pacific Bell |
| 1-831-423 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-424 | Monterey | Salinas | Pacific Bell |
| 1-831-425 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-426 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-427 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-428 | Alameda | Oakland | Sprint Spectrum L.p. |
| 1-831-429 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-430 | Santa Cruz | Scotts Valley | Pacific Bell |
| 1-831-431 | Santa Cruz | Scotts Valley | Pacific Bell |
| 1-831-435 | San Francisco | San Francisco | Pacific Bell |
| 1-831-438 | Santa Cruz | Scotts Valley | Pacific Bell |
| 1-831-439 | Santa Cruz | Scotts Valley | Pacific Bell |
| 1-831-440 | Santa Cruz | Scotts Valley | Pacific Bell |
| 1-831-442 | Monterey | Salinas | Pacific Bell |
| 1-831-443 | Monterey | Salinas | Pacific Bell |
| 1-831-444 | Monterey | Salinas | Pacific Bell |
| 1-831-449 | Monterey | Salinas | Pacific Bell |
| 1-831-453 | Monterey | Salinas | At&t Corp. |
| 1-831-454 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-455 | Monterey | Salinas | Pacific Bell |
| 1-831-457 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-458 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-459 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-460 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-461 | Santa Cruz | Scotts Valley | Pacific Bell |
| 1-831-462 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-464 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-465 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-466 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-469 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-471 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-475 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-476 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-477 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-479 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-480 | Alameda | Oakland | Matrix Telecom, Llc. Sii Tnci - Ca |
| 1-831-484 | Monterey | Salinas | Pacific Bell |
| 1-831-498 | San Francisco | San Francisco | O1 Communications, Inc. - Ca |
| 1-831-502 | Santa Cruz | Santa Cruz | Pacific Bell |
| 1-831-508 | San Francisco | San Francisco | O1 Communications, Inc. - Ca |
| 1-831-512 | Monterey | Salinas | Sprint Spectrum L.p. |
| 1-831-515 | Santa Clara | San Jose | Mpower Communications Corp - Ca |
| 1-831-520 | Monterey | Salinas | American Messaging Services, Llc |
| 1-831-521 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-524 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-525 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-531 | Alameda | Fremont | Xo California, Inc. |
| 1-831-532 | Alameda | Fremont | Xo California, Inc. |
| 1-831-533 | Alameda | Fremont | Xo California, Inc. |
| 1-831-534 | Alameda | Fremont | Xo California, Inc. |
| 1-831-535 | Alameda | Fremont | Xo California, Inc. |
| 1-831-536 | Alameda | Fremont | Xo California, Inc. |
| 1-831-537 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-539 | Alameda | Oakland | Sprint Spectrum L.p. |
| 1-831-540 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-560 | San Francisco | San Francisco | American Messaging Services, Llc |
| 1-831-566 | Solano | Fairfield | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-574 | Monterey | Salinas | U.s. Telepacific Corp. - Ca |
| 1-831-575 | Santa Clara | Santa Clara | Pacific Bell |
| 1-831-576 | Alameda | Oakland | Matrix Telecom, Llc. Sii Tnci - Ca |
| 1-831-578 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-580 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-582 | Monterey | Marina | Pacific Bell |
| 1-831-583 | Monterey | Seaside | Pacific Bell |
| 1-831-585 | Monterey | Salinas | Sprint Spectrum L.p. |
| 1-831-586 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-588 | Solano | Fairfield | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-593 | Monterey | Salinas | Charter Fiberlink Ca-cco, Llc - Ca |
| 1-831-594 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-595 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-596 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-597 | Monterey | Monterey | Peerless Network Of California, Llc - Ca |
| 1-831-598 | Monterey | Salinas | American Messaging Services, Llc |
| 1-831-600 | Santa Clara | San Jose | U.s. Telepacific Corp. - Ca |
| 1-831-601 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-603 | Alameda | Oakland | Matrix Telecom, Llc. Sii Tnci - Ca |
| 1-831-604 | Alameda | Oakland | Matrix Telecom, Llc. Sii Tnci - Ca |
| 1-831-607 | San Francisco | San Francisco | O1 Communications, Inc. - Ca |
| 1-831-609 | San Francisco | San Francisco | O1 Communications, Inc. - Ca |
| 1-831-610 | San Francisco | San Francisco | O1 Communications, Inc. - Ca |
| 1-831-612 | Santa Clara | San Jose | Broadwing Communications, Llc - Ca |
| 1-831-613 | Monterey | Salinas | Bandwidth.com Clec, Llc - Ca |
| 1-831-618 | Alameda | Oakland | Matrix Telecom, Llc. Sii Tnci - Ca |
| 1-831-620 | Monterey | Carmel | Pacific Bell |
| 1-831-621 | Santa Clara | San Jose | Broadwing Communications, Llc - Ca |
| 1-831-622 | Monterey | Carmel | Pacific Bell |
| 1-831-623 | San Benito | San Juan Bautista | Pacific Bell |
| 1-831-624 | Monterey | Carmel | Pacific Bell |
| 1-831-625 | Monterey | Carmel | Pacific Bell |
| 1-831-626 | Monterey | Carmel | Pacific Bell |
| 1-831-627 | Monterey | San Ardo | Pacific Bell |
| 1-831-628 | San Benito | Tres Pinos | Pacific Bell |
| 1-831-630 | San Benito | Hollister | Pacific Bell |
| 1-831-632 | Monterey | Castroville | Pacific Bell |
| 1-831-633 | Monterey | Castroville | Pacific Bell |
| 1-831-634 | San Benito | Hollister | Pacific Bell |
| 1-831-635 | San Benito | Hollister | Pacific Bell |
| 1-831-636 | San Benito | Hollister | Pacific Bell |
| 1-831-637 | San Benito | Hollister | Pacific Bell |
| 1-831-638 | San Benito | Hollister | Pacific Bell |
| 1-831-641 | Monterey | Monterey | Pacific Bell |
| 1-831-642 | Monterey | Monterey | Pacific Bell |
| 1-831-643 | Monterey | Monterey | Pacific Bell |
| 1-831-644 | Monterey | Monterey | Pacific Bell |
| 1-831-645 | Monterey | Monterey | Pacific Bell |
| 1-831-646 | Monterey | Monterey | Pacific Bell |
| 1-831-647 | Monterey | Monterey | Pacific Bell |
| 1-831-648 | Monterey | Monterey | Pacific Bell |
| 1-831-649 | Monterey | Monterey | Pacific Bell |
| 1-831-652 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-653 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-655 | Monterey | Monterey | Pacific Bell |
| 1-831-656 | Monterey | Monterey | Pacific Bell |
| 1-831-657 | Monterey | Monterey | Pacific Bell |
| 1-831-658 | Monterey | Monterey | Pacific Bell |
| 1-831-659 | Monterey | Carmel Valley | Pacific Bell |
| 1-831-661 | Santa Cruz | Aptos | Pacific Bell |
| 1-831-662 | Santa Cruz | Aptos | Pacific Bell |
| 1-831-663 | Monterey | Salinas | Pacific Bell |
| 1-831-664 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-665 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-666 | San Francisco | San Francisco | Cf Communications, Llc Dba Telekenex - Ca |
| 1-831-667 | Monterey | Big Sur | Pacific Bell |
| 1-831-673 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-674 | Monterey | Greenfield | Pacific Bell |
| 1-831-675 | Monterey | Gonzales | Pacific Bell |
| 1-831-676 | Monterey | Salinas | At&t Local |
| 1-831-677 | Monterey | Salinas | Matrix Telecom, Llc. Sii Tnci - Ca |
| 1-831-678 | Monterey | Soledad | Pacific Bell |
| 1-831-679 | Monterey | Chualar | Pacific Bell |
| 1-831-682 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-684 | Santa Cruz | Aptos | Pacific Bell |
| 1-831-685 | Santa Cruz | Aptos | Pacific Bell |
| 1-831-687 | Santa Cruz | Aptos | Pacific Bell |
| 1-831-688 | Santa Cruz | Aptos | Pacific Bell |
| 1-831-689 | Santa Cruz | Aptos | Pacific Bell |
| 1-831-693 | San Benito | Paicines | Pinnacles Telephone Co. |
| 1-831-703 | San Francisco | San Francisco | Level 3 Telecom Of California, Lp - Ca |
| 1-831-704 | San Francisco | San Francisco | Neutral Tandem-california, Llc - Ca |
| 1-831-705 | Monterey | Salinas | U.s. Telepacific Corp. - Ca |
| 1-831-706 | Solano | Fairfield | Level 3 Telecom Of California, Lp - Ca |
| 1-831-707 | Alameda | Oakland | Level 3 Telecom Of California, Lp - Ca |
| 1-831-708 | San Francisco | San Francisco | O1 Communications, Inc. - Ca |
| 1-831-709 | San Francisco | San Francisco | Level 3 Communications, Llc - Ca |
| 1-831-710 | Monterey | Salinas | New Cingular Wireless Pcs, Llc |
| 1-831-713 | Solano | Fairfield | O1 Communications, Inc. - Ca |
| 1-831-717 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-718 | Monterey | Salinas | Mci Worldcom Communications, Inc., Ca |
| 1-831-722 | Santa Cruz | Watsonville | Pacific Bell |
| 1-831-724 | Santa Cruz | Watsonville | Pacific Bell |
| 1-831-726 | Monterey | Aromas | Pacific Bell |
| 1-831-728 | Santa Cruz | Watsonville | Pacific Bell |
| 1-831-731 | Monterey | Salinas | O1 Communications, Inc. - Ca |
| 1-831-737 | Monterey | Salinas | U.s. Telepacific Corp. - Ca |
| 1-831-740 | San Francisco | San Francisco | Teleport Communications Group - San Francisco |
| 1-831-741 | Monterey | Salinas | Level 3 Communications, Llc - Ca |
| 1-831-744 | Monterey | Salinas | Cellco Partnership Dba Verizon Wireless - Ca |
| 1-831-747 | Monterey | Salinas | At&t Corp. |
| 1-831-750 | Alameda | Oakland | Sprint Spectrum L.p. |
| 1-831-751 | Monterey | Salinas | Pacific Bell |
| 1-831-753 | Monterey | Salinas | Pacific Bell |
| 1-831-754 | Monterey | Salinas | Pacific Bell |
| 1-831-755 | Monterey | Salinas | Pacific Bell |
| 1-831-756 | Monterey | Salinas | Utility Telecom Group, Llc - Ca |
| 1-831-757 | Monterey | Salinas | Pacific Bell |
| 1-831-758 | Monterey | Salinas | Pacific Bell |
| 1-831-759 | Monterey | Salinas | Pacific Bell |
| 1-831-760 | Monterey | Salinas | Sprint Spectrum L.p. |
| 1-831-761 | Santa Cruz | Watsonville | Pacific Bell |
| 1-831-763 | Santa Cruz | Watsonville | Pacific Bell |
| 1-831-766 | Monterey | Salinas | Pacific Bell |