All assignees
800 prefixes in 530 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 530-500 | DUNSMUIR | 103G | 2011-03-28 | Yes |
| 530-501 | WILLIAMS | 515J | — | Yes |
| 530-502 | PRINCETON | 515J | — | Yes |
| 530-503 | PLVL SOUTH | 515J | — | Yes |
| 530-504 | WINTERS | 073H | — | Yes |
| 530-505 | WINTERS | 7145 | — | Yes |
| 530-506 | KNIGHTSLDG | 649C | — | Yes |
| 530-507 | ESPARTO | 649C | — | Yes |
| 530-508 | DUNNIGAN | 649C | — | Yes |
| 530-509 | ORLEANS | 981E | — | Yes |
| 530-510 | REDDING | 5562 | — | Yes |
| 530-511 | XXXXXXXXXX | MULT | — | — |
| 530-512 | COLFAX | 649C | — | Yes |
| 530-513 | CHICO | 6006 | — | Yes |
| 530-514 | CHICO | 6006 | — | — |
| 530-515 | REDDING | 6006 | — | — |
| 530-516 | CHICO | 9748 | — | — |
| 530-517 | BUTTE CITY | 6010 | — | Yes |
| 530-518 | CHICO | 6010 | — | — |
| 530-519 | CHICO | 6006 | — | — |
| 530-520 | CHICO | 6006 | — | — |
| 530-521 | CHICO | 6010 | — | — |
| 530-522 | CAMPTONVL | 649C | — | Yes |
| 530-523 | HOMEWOOD | 7145 | — | Yes |
| 530-524 | REDDING | 6006 | — | — |
| 530-525 | HOMEWOOD | 9740 | — | Yes |
| 530-526 | RED BLUFF | 6006 | — | Yes |
| 530-527 | RED BLUFF | 9740 | — | — |
| 530-528 | RED BLUFF | 9740 | — | Yes |
| 530-529 | RED BLUFF | 9740 | — | — |
| 530-530 | ROBBINS | 624H | 2023-11-30 | Yes |
| 530-531 | BIGGS | 649C | — | Yes |
| 530-532 | OROVILLE | 9740 | — | Yes |
| 530-533 | OROVILLE | 9740 | — | — |
| 530-534 | OROVILLE | 9740 | — | — |
| 530-535 | ALLEGHANY | 515J | — | Yes |
| 530-536 | TRUCKEE | 612K | 2013-11-04 | Yes |
| 530-537 | AUBN MAIN | 6010 | 2015-12-21 | Yes |
| 530-538 | OROVILLE | 9740 | — | Yes |
| 530-539 | SOUTHTAHOE | 7145 | — | Yes |
| 530-540 | CHICO | 515J | — | — |
| 530-541 | SOUTHTAHOE | 9740 | — | Yes |
| 530-542 | SOUTHTAHOE | 9740 | — | — |
| 530-543 | SOUTHTAHOE | 9740 | — | Yes |
| 530-544 | SOUTHTAHOE | 9740 | — | — |
| 530-545 | SOUTHTAHOE | 6010 | — | Yes |
| 530-546 | NTAH BCWY | 9740 | — | Yes |
| 530-547 | MILLVILLE | 2308 | — | Yes |
| 530-548 | NTAH BCWY | 981E | — | Yes |
| 530-549 | MILLVILLE | 2308 | — | Yes |
| 530-550 | TRUCKEE | 9740 | — | Yes |
| 530-551 | ANDERSON | 6010 | 2016-06-08 | Yes |
| 530-552 | OROVILLE | 6529 | 2014-12-01 | Yes |
| 530-553 | NTAH BCWY | 7145 | — | Yes |
| 530-554 | DAVIS | 8826 | 2001-08-22 | Yes |
| 530-555 | DIR ASST | MULT | — | — |
| 530-556 | SHINGLESPG | 394L | 2015-04-24 | Yes |
| 530-557 | NEVADACITY | 6010 | 2017-01-16 | Yes |
| 530-558 | SHINGLESPG | 5562 | — | Yes |
| 530-559 | GRVY MAIN | 6006 | — | — |
| 530-560 | REDDING | 996H | 2018-10-04 | Yes |
| 530-561 | ANDERSON | 6006 | 2018-10-08 | Yes |
| 530-562 | TRUCKEE | 9740 | — | Yes |
| 530-563 | TRUCKEE | 7145 | — | Yes |
| 530-564 | DAVIS | 8826 | — | Yes |
| 530-565 | LIVE OAK | 6010 | 2015-08-04 | Yes |
| 530-566 | CHICO | 9740 | — | Yes |
| 530-567 | RED BLUFF | 6529 | 2001-03-01 | Yes |
| 530-568 | MT SHASTA | 515J | — | Yes |
| 530-569 | CEDARVILLE | 6006 | 2004-11-24 | Yes |
| 530-570 | CHICO | 6010 | — | — |
| 530-571 | CHICO | 9262 | — | Yes |
| 530-572 | YREKA | 145J | — | Yes |
| 530-573 | SOUTHTAHOE | 9740 | — | Yes |
| 530-574 | DAVIS | 6010 | — | Yes |
| 530-575 | GRVY MAIN | 6010 | 2001-04-20 | Yes |
| 530-576 | LOSMOLINOS | 649C | — | Yes |
| 530-577 | SOUTHTAHOE | 9740 | — | Yes |
| 530-578 | SOUTHTAHOE | 516C | — | Yes |
| 530-579 | TRUCKEE | 649C | — | — |
| 530-580 | NTAH THCY | 7145 | — | Yes |
| 530-581 | NTAH THCY | 9740 | — | Yes |
| 530-582 | TRUCKEE | 9740 | — | — |
| 530-583 | NTAH THCY | 9740 | — | — |
| 530-584 | NTAH THCY | 9740 | — | Yes |
| 530-585 | RANCHOTHMA | 2313 | — | — |
| 530-586 | CORNING | 6010 | — | Yes |
| 530-587 | TRUCKEE | 9740 | — | — |
| 530-588 | CHICO | 6010 | 2005-01-03 | Yes |
| 530-589 | OROVILLE | 9740 | — | Yes |
| 530-590 | GRVY SOUTH | 939H | 2023-08-10 | Yes |
| 530-591 | CHICO | 6529 | 2002-01-29 | Yes |
| 530-592 | CHICO | 6010 | — | Yes |
| 530-593 | NORTH YUBA | 649C | — | Yes |
| 530-594 | GRIDLEY | 7128 | 2013-11-25 | Yes |
| 530-595 | MINERAL | 2308 | — | Yes |
| 530-596 | LK ALMANOR | 3402 | — | Yes |
| 530-597 | PAYNES CRK | 2308 | — | Yes |
| 530-598 | YREKA | 6006 | — | — |
| 530-599 | MARYSVILLE | 649C | 2017-11-14 | 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.