All assignees
101 prefixes in 350 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 350-200 | LODI | 981E | 2022-09-28 | Yes |
| 350-201 | WALLACE | 394L | 2022-10-10 | Yes |
| 350-202 | THORNTON | 939H | 2022-10-28 | Yes |
| 350-203 | DOS PALOS | 939H | 2023-12-20 | Yes |
| 350-204 | ATWATER | 6529 | 2023-01-11 | Yes |
| 350-205 | PLANADA | 394L | 2023-01-18 | Yes |
| 350-206 | TURLOCK | 7145 | 2023-02-27 | Yes |
| 350-207 | MODESTO | 732J | — | Yes |
| 350-208 | KNIGHTFRRY | 624H | — | Yes |
| 350-209 | VALLEY SPG | 373F | 2023-04-18 | Yes |
| 350-210 | TUOLUMNE | 649C | 2023-06-21 | Yes |
| 350-211 | MULT | — | — | |
| 350-212 | SUTTER CRK | 939H | 2023-12-20 | Yes |
| 350-213 | LINDEN | 939H | 2023-12-20 | Yes |
| 350-214 | VALLEY SPG | 939H | 2023-12-21 | Yes |
| 350-215 | SNELLING | 939H | 2023-12-21 | Yes |
| 350-216 | MODESTO | 939H | 2023-12-21 | Yes |
| 350-217 | STOCKTON | 6529 | 2024-01-11 | Yes |
| 350-218 | MANTECA | 6529 | 2024-01-19 | Yes |
| 350-219 | STOCKTON | 6010 | 2024-03-14 | Yes |
| 350-220 | MODESTO | 6010 | 2024-03-14 | Yes |
| 350-221 | LODI | 649C | 2024-05-14 | Yes |
| 350-222 | HUGHSON | 145J | 2022-10-04 | Yes |
| 350-223 | MERCED | 649C | 2024-05-14 | Yes |
| 350-224 | ATWATER | 6010 | 2024-05-29 | Yes |
| 350-225 | LOS BANOS | 649C | 2024-07-05 | Yes |
| 350-226 | MODESTO | 649C | 2024-07-05 | Yes |
| 350-227 | TRACY | 649C | 2024-07-05 | Yes |
| 350-228 | STOCKTON | 6010 | 2024-08-06 | Yes |
| 350-229 | MANTECA | 6006 | 2024-08-16 | Yes |
| 350-230 | MODESTO | 6010 | 2024-08-30 | Yes |
| 350-231 | STOCKTON | 616J | 2024-09-23 | Yes |
| 350-232 | PINECREST | 516C | 2024-10-08 | Yes |
| 350-233 | ATWATER | 6529 | 2024-10-21 | Yes |
| 350-234 | JACKSON | 6010 | 2024-10-22 | Yes |
| 350-235 | CLEMENTS | 649C | 2022-11-18 | Yes |
| 350-236 | JAMESTOWN | 6529 | 2024-12-06 | Yes |
| 350-237 | PATTERSON | 624H | 2025-01-02 | Yes |
| 350-238 | MODESTO | 6006 | 2025-03-11 | Yes |
| 350-239 | LOS BANOS | 649C | 2025-03-13 | Yes |
| 350-240 | TURLOCK | 6010 | 2025-03-14 | Yes |
| 350-241 | STOCKTON | 700J | 2025-03-21 | Yes |
| 350-242 | STOCKTON | 478J | 2025-04-21 | Yes |
| 350-243 | MANTECA | 6006 | 2025-05-06 | Yes |
| 350-244 | JACKSON | 6006 | 2025-05-16 | Yes |
| 350-245 | MARIPOSA | 6006 | 2025-05-21 | Yes |
| 350-246 | GALT | 649C | 2025-08-13 | Yes |
| 350-247 | LODI | 6529 | 2025-08-20 | Yes |
| 350-248 | ATWATER | 6529 | 2025-08-20 | Yes |
| 350-249 | ATWATER | 6010 | 2025-08-22 | Yes |
| 350-250 | TRACY | 649C | 2022-09-28 | Yes |
| 350-251 | OAKDALE | 6010 | 2025-09-04 | Yes |
| 350-252 | TURLOCK | 6010 | 2025-10-09 | Yes |
| 350-253 | CLEMENTS | 624H | 2025-01-08 | Yes |
| 350-254 | TRACY | 6010 | 2025-12-10 | Yes |
| 350-255 | MANTECA | 649C | 2025-12-12 | Yes |
| 350-256 | MODESTO | 649C | 2025-12-12 | Yes |
| 350-257 | RIPON | 6010 | 2026-04-22 | Yes |
| 350-258 | ATWATER | 649C | 2026-06-30 | Yes |
| 350-259 | LODI | 624H | 2026-08-04 | Yes |
| 350-260 | DOS PALOS | 649C | 2026-08-11 | Yes |
| 350-261 | MODESTO | 649C | 2026-05-29 | Yes |
| 350-262 | STOCKTON | 649C | 2026-08-19 | Yes |
| 350-263 | MODESTO | 649C | 2026-08-21 | Yes |
| 350-305 | YOSEMITE | 649C | 2022-10-24 | Yes |
| 350-311 | MULT | — | — | |
| 350-333 | NEWMAN | 145J | 2022-10-04 | Yes |
| 350-350 | STOCKTON | 624H | 2023-10-25 | Yes |
| 350-353 | MODESTO | 490J | 2025-08-28 | Yes |
| 350-355 | STOCKTON | 624H | 2024-01-04 | Yes |
| 350-411 | MULT | — | — | |
| 350-444 | SNELLING | 145J | 2022-10-04 | Yes |
| 350-500 | ATWATER | 624H | 2023-11-14 | Yes |
| 350-503 | MERCED | 624H | 2023-11-14 | Yes |
| 350-511 | MULT | — | — | |
| 350-530 | ESCALON | 624H | 2023-11-14 | Yes |
| 350-550 | MOCCASIN | 624H | 2023-11-14 | Yes |
| 350-555 | DIR ASST | MULT | — | — |
| 350-600 | OAKDALE | 624H | 2023-11-17 | Yes |
| 350-611 | MULT | — | — | |
| 350-630 | RIVERBANK | 624H | 2023-11-17 | Yes |
| 350-666 | SANANDREAS | 145J | 2022-10-04 | Yes |
| 350-700 | — | — | ||
| 350-711 | MULT | — | — | |
| 350-750 | SNRA MAIN | 624H | 2023-11-17 | Yes |
| 350-777 | GALT | 145J | 2022-10-04 | Yes |
| 350-811 | MULT | — | — | |
| 350-867 | LE GRAND | 649C | 2025-09-11 | Yes |
| 350-880 | MANTECA | 193E | 2026-05-20 | Yes |
| 350-888 | GROVELAND | 145J | 2022-10-04 | Yes |
| 350-900 | TRACY | 624H | 2023-11-17 | Yes |
| 350-911 | MULT | — | — | |
| 350-930 | TURLOCK | 624H | 2023-11-17 | Yes |
| 350-950 | — | — | ||
| 350-955 | WTFR DNPR | 624H | 2023-11-17 | Yes |
| 350-958 | — | — | ||
| 350-959 | — | — | ||
| 350-960 | WTFR MAIN | 624H | 2023-11-17 | Yes |
| 350-976 | — | — | ||
| 350-998 | STOCKTON | 649C | 2026-06-01 | 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.