All assignees
140 prefixes in 840 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 840-200 | CHINO | 965H | 2021-01-04 | Yes |
| 840-201 | FONTANA | 6010 | 2021-03-11 | Yes |
| 840-202 | POMONA | 6010 | 2021-07-29 | Yes |
| 840-203 | S BERNDINO | 6010 | 2021-07-29 | Yes |
| 840-204 | S BERNDINO | 6010 | 2021-07-29 | Yes |
| 840-205 | CLAREMONT | 981E | 2021-10-27 | Yes |
| 840-206 | CHINO | 6010 | 2021-08-10 | Yes |
| 840-207 | ARROWHEAD | 6529 | 2021-10-28 | Yes |
| 840-208 | CLAREMONT | 981E | 2022-02-22 | Yes |
| 840-209 | ARROWHEAD | 6529 | 2021-08-31 | Yes |
| 840-210 | FONTANA | 6529 | 2021-12-14 | Yes |
| 840-211 | MULT | — | — | |
| 840-212 | CHINO | 6529 | 2021-11-15 | Yes |
| 840-213 | REDLANDS | 6529 | 2022-08-12 | Yes |
| 840-214 | MARSHALL | 6529 | 2022-08-12 | Yes |
| 840-215 | HIGHLAND | 6529 | 2022-02-28 | Yes |
| 840-216 | ARROWHEAD | 6529 | 2022-03-01 | Yes |
| 840-217 | FONTANA | 6529 | 2022-09-02 | Yes |
| 840-218 | CHINO | 6006 | 2022-10-10 | Yes |
| 840-219 | CALIMESA | 6529 | 2021-09-13 | Yes |
| 840-220 | RIALTO | 981E | 2022-09-13 | Yes |
| 840-221 | S BERNDINO | 321J | 2022-10-21 | Yes |
| 840-222 | S BERNDINO | 965H | 2020-12-24 | Yes |
| 840-223 | CALIMESA | 981E | 2022-10-24 | Yes |
| 840-224 | S BERNDINO | 6010 | 2022-12-06 | Yes |
| 840-225 | POMONA | 6010 | 2023-03-10 | Yes |
| 840-226 | POMONA | 649C | 2023-04-07 | Yes |
| 840-227 | S BERNDINO | 6006 | 2023-04-13 | Yes |
| 840-228 | COLTON | 6006 | 2023-04-17 | Yes |
| 840-229 | CLAREMONT | 6006 | 2023-04-18 | Yes |
| 840-230 | POMONA | 490J | 2023-05-30 | Yes |
| 840-231 | POMONA | 6529 | 2023-05-31 | Yes |
| 840-232 | FONTANA | 6529 | 2023-06-09 | Yes |
| 840-233 | ARROWHEAD | 6529 | 2023-07-13 | Yes |
| 840-234 | ARROWHEAD | 965H | 2021-04-18 | Yes |
| 840-235 | COLTON | 939H | 2023-08-11 | Yes |
| 840-236 | CLAREMONT | 649C | 2023-09-19 | Yes |
| 840-237 | ONTARIO | 649C | 2023-09-19 | Yes |
| 840-238 | POMONA | 6010 | 2023-09-26 | Yes |
| 840-239 | FONTANA | 649C | 2023-10-02 | Yes |
| 840-240 | DIAMONDBAR | 649C | 2022-11-18 | Yes |
| 840-241 | RIALTO | 649C | 2023-10-02 | Yes |
| 840-242 | UPLAND | 649C | 2023-10-02 | Yes |
| 840-243 | POMONA | 6529 | 2023-10-10 | Yes |
| 840-244 | DIAMONDBAR | 6529 | 2023-10-16 | Yes |
| 840-245 | REDLANDS | 6529 | 2023-10-18 | Yes |
| 840-246 | ETIWANDA | 6529 | 2023-11-01 | Yes |
| 840-247 | HIGHLAND | 6529 | 2023-11-08 | Yes |
| 840-248 | FONTANA | 6529 | 2023-12-05 | Yes |
| 840-249 | MARSHALL | 6529 | 2023-12-07 | Yes |
| 840-250 | ARROWHEAD | 6529 | 2024-01-11 | Yes |
| 840-251 | REDLANDS | 6529 | 2024-01-19 | Yes |
| 840-252 | MENTONE | 6529 | 2022-02-28 | Yes |
| 840-253 | CALIMESA | 6529 | 2024-03-06 | Yes |
| 840-254 | RIALTO | 649C | 2024-03-18 | Yes |
| 840-255 | S BERNDINO | 649C | 2024-03-18 | Yes |
| 840-256 | UPLAND | 6529 | 2024-03-28 | Yes |
| 840-257 | COLTON | 6529 | 2024-03-28 | Yes |
| 840-258 | HIGHLAND | 6006 | 2024-04-15 | Yes |
| 840-259 | POMONA | 6010 | 2024-05-09 | Yes |
| 840-260 | POMONA | 6529 | 2024-05-22 | Yes |
| 840-261 | FONTANA | 6010 | 2024-05-29 | Yes |
| 840-262 | ARROWHEAD | 6529 | 2024-07-30 | Yes |
| 840-263 | FONTANA | 6010 | 2024-09-09 | Yes |
| 840-264 | POMONA | 6010 | 2024-09-20 | Yes |
| 840-265 | ARROWHEAD | 6529 | 2024-10-09 | Yes |
| 840-266 | S BERNDINO | 6006 | 2024-10-09 | Yes |
| 840-267 | POMONA | 6010 | 2024-10-21 | Yes |
| 840-268 | MARSHALL | 6010 | 2024-11-12 | Yes |
| 840-269 | ONTARIO | 624H | 2025-01-02 | Yes |
| 840-270 | ONTARIO | 6010 | 2025-01-06 | Yes |
| 840-271 | FONTANA | 6006 | 2025-01-14 | Yes |
| 840-272 | CHINO | 624H | 2025-01-28 | Yes |
| 840-273 | MENTONE | 649C | 2025-02-05 | Yes |
| 840-274 | ARROWHEAD | 649C | 2025-03-13 | Yes |
| 840-275 | POMONA | 6006 | 2025-03-18 | Yes |
| 840-276 | UPLAND | 6006 | 2025-03-27 | Yes |
| 840-277 | CLAREMONT | 6006 | 2025-03-28 | Yes |
| 840-278 | ARROWHEAD | 6529 | 2025-06-18 | Yes |
| 840-279 | ONTARIO | 6006 | 2025-07-29 | Yes |
| 840-280 | S BERNDINO | 7139 | 2025-08-11 | Yes |
| 840-281 | COLTON | 6529 | 2025-08-20 | Yes |
| 840-282 | CHINO | 649C | 2025-09-03 | Yes |
| 840-283 | ARROWHEAD | 649C | 2025-09-18 | Yes |
| 840-284 | CHINO | 649C | 2023-10-16 | Yes |
| 840-285 | FONTANA | 649C | 2025-09-19 | Yes |
| 840-286 | ARROWHEAD | 6529 | 2025-11-24 | Yes |
| 840-287 | MARSHALL | 649C | 2025-12-12 | Yes |
| 840-288 | S BERNDINO | 7229 | 2026-02-19 | Yes |
| 840-289 | DIAMONDBAR | 649C | 2026-07-21 | Yes |
| 840-290 | UPLAND | 649C | 2026-07-24 | Yes |
| 840-291 | S BERNDINO | 649C | 2026-07-28 | Yes |
| 840-292 | S BERNDINO | 6010 | 2026-08-05 | Yes |
| 840-293 | ETIWANDA | 649C | 2026-08-11 | Yes |
| 840-300 | REDLANDS | 965H | 2021-07-15 | Yes |
| 840-311 | MULT | — | — | |
| 840-333 | POMONA | 965H | 2020-12-24 | Yes |
| 840-336 | COLTON | 965H | 2022-02-18 | Yes |
| 840-345 | POMONA | 965H | 2021-07-07 | Yes |
| 840-356 | ARROWHEAD | 965H | 2022-02-18 | 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.