All assignees
442 prefixes in 831 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 831-200 | MONTEREY | 373F | 2014-11-26 | Yes |
| 831-201 | SANTA CRUZ | 6010 | 2016-09-07 | Yes |
| 831-202 | SALINAS | 7229 | 2018-03-30 | Yes |
| 831-203 | SALINAS | 732J | 2023-08-10 | Yes |
| 831-204 | MONTEREY | 649C | — | Yes |
| 831-205 | HOLLISTER | 7145 | 2009-10-08 | Yes |
| 831-206 | SALINAS | 6006 | — | — |
| 831-207 | HOLLISTER | 6529 | 2001-09-12 | Yes |
| 831-208 | SALINAS | 6006 | 2019-03-20 | Yes |
| 831-209 | — | — | ||
| 831-210 | SALINAS | 6529 | 2002-01-16 | Yes |
| 831-211 | XXXXXXXXXX | MULT | — | — |
| 831-212 | SANTA CRUZ | 5562 | — | Yes |
| 831-213 | — | — | ||
| 831-214 | SALINAS | 6010 | — | — |
| 831-215 | MONTEREY | 321J | 2020-10-02 | Yes |
| 831-216 | FELTON | 7145 | — | Yes |
| 831-217 | BOULDERCRK | 7145 | — | Yes |
| 831-218 | BEN LOMOND | 7145 | — | Yes |
| 831-219 | APTOS | 7145 | — | Yes |
| 831-220 | MONTEREY | 197D | 2018-05-31 | Yes |
| 831-221 | SAN ARDO | 515J | — | Yes |
| 831-222 | FELTON | 671J | — | Yes |
| 831-223 | SOLEDAD | 8826 | — | Yes |
| 831-224 | MONTEREY | 6529 | — | Yes |
| 831-225 | SALINAS | 508J | 2015-06-23 | Yes |
| 831-226 | SANTA CRUZ | 516C | 2015-07-16 | Yes |
| 831-227 | SANTA CRUZ | 6006 | — | Yes |
| 831-228 | WATSONVL | 792K | 2015-09-21 | Yes |
| 831-229 | SALINAS | 6010 | — | — |
| 831-230 | MONTEREY | 073H | 2016-12-15 | Yes |
| 831-231 | GREENFIELD | 624H | 2019-05-03 | Yes |
| 831-232 | CHUALAR | 515J | — | Yes |
| 831-233 | MONTEREY | 8826 | — | Yes |
| 831-234 | SANTA CRUZ | 6006 | — | — |
| 831-235 | SALINAS | 6006 | — | — |
| 831-236 | MONTEREY | 6006 | — | — |
| 831-237 | SOLEDAD | 515J | — | Yes |
| 831-238 | CARMEL | 6010 | — | Yes |
| 831-239 | SANTA CRUZ | 6010 | — | — |
| 831-240 | SALINAS | 6529 | — | Yes |
| 831-241 | MONTEREY | 7421 | — | Yes |
| 831-242 | MONTEREY | 9740 | — | Yes |
| 831-243 | SALINAS | 425J | 2020-06-29 | Yes |
| 831-244 | BIG SUR | 981E | — | Yes |
| 831-245 | HOLLISTER | 6006 | — | Yes |
| 831-246 | BEN LOMOND | 6006 | — | Yes |
| 831-247 | SANTA CRUZ | 6006 | — | — |
| 831-248 | — | — | ||
| 831-249 | BIG SUR | 516C | 2009-12-14 | Yes |
| 831-250 | CARMEL | 515J | — | Yes |
| 831-251 | APTOS | 6010 | — | — |
| 831-252 | BEN LOMOND | 6010 | — | — |
| 831-253 | SALINAS | 671J | 2020-12-04 | Yes |
| 831-254 | WATSONVL | 6010 | — | — |
| 831-255 | SANTA CRUZ | 7894 | — | — |
| 831-256 | SALINAS | 6006 | 2015-04-10 | Yes |
| 831-257 | APTOS | 649C | 2016-10-07 | Yes |
| 831-258 | SALINAS | 6010 | 2016-07-08 | Yes |
| 831-259 | MONTEREY | 671J | 2022-06-10 | Yes |
| 831-260 | SOLEDAD | 6010 | 2022-03-15 | Yes |
| 831-261 | SALINAS | 6010 | — | — |
| 831-262 | SALINAS | 6006 | — | — |
| 831-263 | KING CITY | 515J | — | Yes |
| 831-264 | MONTEREY | 981E | — | Yes |
| 831-265 | HOLLISTER | 516C | 2008-04-02 | Yes |
| 831-266 | SANTA CRUZ | 6529 | 2021-03-24 | Yes |
| 831-267 | BIG SUR | 671J | 2006-12-14 | Yes |
| 831-268 | FELTON | 649C | 2016-07-15 | Yes |
| 831-269 | SALINAS | 7145 | 2007-06-21 | Yes |
| 831-270 | SALINAS | 671J | 2022-06-10 | Yes |
| 831-271 | HOLLISTER | 073H | 2021-06-23 | Yes |
| 831-272 | SALINAS | 649C | — | Yes |
| 831-273 | SALINAS | 649C | 2017-04-06 | Yes |
| 831-274 | WATSONVL | 8826 | — | Yes |
| 831-275 | MONTEREY | 981E | 2008-10-23 | Yes |
| 831-276 | SALINAS | 073H | — | Yes |
| 831-277 | MONTEREY | 6006 | — | — |
| 831-278 | BEN LOMOND | 6006 | — | Yes |
| 831-279 | SALINAS | 490J | 2023-05-10 | Yes |
| 831-280 | APTOS | 939H | 2023-08-11 | Yes |
| 831-281 | SANTA CRUZ | 6006 | 2023-10-02 | Yes |
| 831-282 | MONTEREY | 515J | 2021-09-17 | Yes |
| 831-283 | CARMEL VLY | 939H | 2022-11-04 | Yes |
| 831-284 | WATSONVL | 6010 | 2023-08-28 | Yes |
| 831-285 | WATSONVL | 981E | 2022-10-28 | Yes |
| 831-286 | GREENFIELD | 649C | 2024-03-21 | Yes |
| 831-287 | SALINAS | 981E | 2008-12-16 | Yes |
| 831-288 | WATSONVL | 792K | 2009-06-11 | Yes |
| 831-289 | BEN LOMOND | 394L | 2022-09-20 | Yes |
| 831-290 | GONZALES | 671J | 2009-06-26 | Yes |
| 831-291 | SANTA CRUZ | 6006 | 2014-04-07 | Yes |
| 831-292 | SOLEDAD | 6010 | 2019-01-08 | Yes |
| 831-293 | CARMEL | 8826 | 2008-06-25 | Yes |
| 831-294 | SALINAS | 6010 | 2024-03-25 | Yes |
| 831-295 | SANTA CRUZ | 6529 | 2001-12-14 | Yes |
| 831-296 | SALINAS | 8826 | 2010-07-12 | Yes |
| 831-297 | HOLLISTER | 6529 | 2001-12-14 | Yes |
| 831-298 | CARMEL VLY | 649C | — | Yes |
| 831-299 | TRES PINOS | 8826 | — | Yes |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.