All assignees
778 prefixes in 509 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 509-400 | MATTAWA | 6270 | 2018-07-19 | Yes |
| 509-401 | POMEROY | 5812 | 2019-06-19 | Yes |
| 509-402 | GRANDVIEW | 483E | — | Yes |
| 509-403 | QUINCY | 7274 | 2020-09-16 | Yes |
| 509-404 | DAYTON | 508J | 2015-01-15 | Yes |
| 509-405 | KENNEWICK | 6529 | 2016-10-07 | Yes |
| 509-406 | YAKIMA | 5812 | 2009-03-16 | Yes |
| 509-407 | QUINCY | 7274 | 2019-11-05 | Yes |
| 509-408 | LIBERTY LK | 006F | 2019-01-31 | Yes |
| 509-409 | QUINCY | 7274 | 2019-11-06 | Yes |
| 509-410 | PASCO | 483E | 2020-06-12 | Yes |
| 509-411 | XXXXXXXXXX | MULT | — | — |
| 509-412 | PASCO | 5562 | 2011-11-16 | Yes |
| 509-413 | SPOKANE | 483E | 2007-08-03 | Yes |
| 509-414 | ELK-GRNBLF | 318J | 2005-09-21 | Yes |
| 509-415 | WENATCHEE | 6529 | 2008-02-21 | Yes |
| 509-416 | PASCO | 6121 | — | Yes |
| 509-417 | WARDEN | 6121 | 2016-02-09 | Yes |
| 509-418 | SPOKANE | 114J | 2019-09-18 | Yes |
| 509-419 | COLVILLE | 6010 | — | Yes |
| 509-420 | RICHLAND | 483E | — | Yes |
| 509-421 | WENATCHEE | 622J | — | Yes |
| 509-422 | OMAK | 9638 | — | — |
| 509-423 | WENATCHEE | 5812 | 2014-04-11 | Yes |
| 509-424 | YAKIMA | 6529 | 2012-05-03 | Yes |
| 509-425 | SPOKANE | 321J | 2022-08-04 | Yes |
| 509-426 | YAKIMA | 7146 | 2009-06-08 | Yes |
| 509-427 | STEVENSON | 4521 | — | Yes |
| 509-428 | RITZVILLE | 6529 | — | Yes |
| 509-429 | OMAK | 5812 | — | Yes |
| 509-430 | PASCO | 6010 | — | — |
| 509-431 | MOSES LAKE | 5812 | 2001-09-04 | Yes |
| 509-432 | PULLMAN | 6529 | — | Yes |
| 509-433 | WENATCHEE | 6010 | — | Yes |
| 509-434 | SPOKANE | 7229 | — | Yes |
| 509-435 | SPOKANE | 7340 | — | Yes |
| 509-436 | WENATCHEE | 3229 | 2018-11-24 | Yes |
| 509-437 | SPOKANE | 616J | 2024-07-30 | Yes |
| 509-438 | KENNEWICK | 6529 | 2002-06-10 | Yes |
| 509-439 | SUNNYSIDE | 5812 | — | Yes |
| 509-440 | KENNEWICK | 6529 | 2009-05-27 | Yes |
| 509-441 | SPOKANE | 9638 | — | — |
| 509-442 | IONE | 2418 | — | Yes |
| 509-443 | SPOKANE | 9638 | — | Yes |
| 509-444 | SPOKANE | 7229 | — | — |
| 509-445 | CUSICK | 2418 | — | Yes |
| 509-446 | METALINFLS | 2418 | — | Yes |
| 509-447 | NEWPORT | 4324 | — | Yes |
| 509-448 | SPOKANE | 9638 | — | — |
| 509-449 | BRIDGEPORT | 5812 | — | Yes |
| 509-450 | EPHRATA | 6010 | 2020-07-02 | Yes |
| 509-451 | YAKIMA | 9638 | — | — |
| 509-452 | YAKIMA | 9638 | — | — |
| 509-453 | YAKIMA | 9638 | — | — |
| 509-454 | YAKIMA | 9638 | — | — |
| 509-455 | SPOKANE | 9638 | — | — |
| 509-456 | SPOKANE | 9638 | — | — |
| 509-457 | YAKIMA | 9638 | — | — |
| 509-458 | SPOKANE | 9638 | — | — |
| 509-459 | SPOKANE | 9638 | — | — |
| 509-460 | KENNEWICK | 6529 | 2001-09-28 | Yes |
| 509-461 | SPOKANE | 483E | — | — |
| 509-462 | SPOKANE | 7229 | — | — |
| 509-463 | SPOKANE | 483E | — | — |
| 509-464 | SPOKANE | 9638 | — | Yes |
| 509-465 | SPOKANE | 9638 | — | — |
| 509-466 | SPOKANE | 9638 | — | — |
| 509-467 | SPOKANE | 9638 | — | — |
| 509-468 | SPOKANE | 9638 | — | — |
| 509-469 | YAKIMA | 9638 | — | — |
| 509-470 | WENATCHEE | 6010 | — | Yes |
| 509-471 | SPOKANE | 483E | — | — |
| 509-472 | SPOKANE | 483E | — | — |
| 509-473 | SPOKANE | 9638 | — | Yes |
| 509-474 | SPOKANE | 9638 | — | Yes |
| 509-475 | SPOKANE | 6529 | — | Yes |
| 509-476 | OROVILLE | 9638 | — | Yes |
| 509-477 | SPOKANE | 7229 | — | Yes |
| 509-478 | ROSALIA | 4324 | — | Yes |
| 509-479 | SPOKANE | 483E | — | — |
| 509-480 | YAKIMA | 5812 | 2005-01-12 | Yes |
| 509-481 | SPOKANE | 7229 | 2004-03-25 | Yes |
| 509-482 | SPOKANE | 9638 | — | — |
| 509-483 | SPOKANE | 9638 | — | — |
| 509-484 | SPOKANE | 9638 | — | — |
| 509-485 | MOLSON | 4423 | — | Yes |
| 509-486 | TONASKET | 4423 | — | Yes |
| 509-487 | SPOKANE | 9638 | — | — |
| 509-488 | OTHELLO | 9638 | — | — |
| 509-489 | SPOKANE | 9638 | — | — |
| 509-490 | YAKIMA | 5562 | — | Yes |
| 509-491 | KENNEWICK | 7146 | 2012-03-22 | Yes |
| 509-492 | PASCO | 6010 | — | Yes |
| 509-493 | WH SALMON | 4521 | — | Yes |
| 509-494 | YAKIMA | 9638 | — | Yes |
| 509-495 | SPOKANE | 9638 | — | Yes |
| 509-496 | SPOKANE | 5812 | — | Yes |
| 509-497 | BENTONCITY | 483E | 2007-07-26 | Yes |
| 509-498 | CHENEY | 7455 | — | Yes |
| 509-499 | SPOKANE | 6010 | — | 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.