All assignees
797 prefixes in 559 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 559-300 | VISALIA | 6529 | 2002-01-29 | Yes |
| 559-301 | FRESNO | 6010 | 2001-12-26 | — |
| 559-302 | VISALIA | 7718 | — | Yes |
| 559-303 | VISALIA | 6010 | — | — |
| 559-304 | FRESNO | 6010 | — | — |
| 559-305 | REEDLEY | 6529 | 2002-01-29 | Yes |
| 559-306 | PORTERVL | 6529 | — | Yes |
| 559-307 | FRESNO | 6529 | — | Yes |
| 559-308 | VISALIA | 5562 | — | Yes |
| 559-309 | HANFORD | 6529 | 2001-12-26 | Yes |
| 559-310 | PORTERVL | 6010 | 2001-12-26 | Yes |
| 559-311 | XXXXXXXXXX | MULT | — | — |
| 559-312 | FRESNO | 7145 | — | Yes |
| 559-313 | FRESNO | 6010 | — | — |
| 559-314 | CLOVIS | 649C | — | Yes |
| 559-315 | DINUBA | 649C | — | Yes |
| 559-316 | FOWLER | 7718 | 2002-06-14 | Yes |
| 559-317 | FRESNO | 6010 | 2012-03-02 | Yes |
| 559-318 | SELMA | 5562 | 2001-12-26 | Yes |
| 559-319 | FRESNO | 7229 | 2018-04-26 | Yes |
| 559-320 | FRESNO | 671J | — | Yes |
| 559-321 | CLOVIS | 7229 | — | Yes |
| 559-322 | CLOVIS | 9740 | — | — |
| 559-323 | CLOVIS | 9740 | — | — |
| 559-324 | CLOVIS | 9740 | — | — |
| 559-325 | CLOVIS | 9740 | — | Yes |
| 559-326 | CLOVIS | 7718 | — | Yes |
| 559-327 | CLOVIS | 9740 | — | — |
| 559-328 | AVENAL | 981E | — | Yes |
| 559-329 | TULARE | 671J | — | Yes |
| 559-330 | MADERA | 6529 | 2015-07-02 | Yes |
| 559-331 | TULARE | 6006 | — | Yes |
| 559-332 | SQUAW VLY | 2319 | — | Yes |
| 559-333 | PORTERVL | 6529 | — | Yes |
| 559-334 | VISALIA | 671J | — | Yes |
| 559-335 | GRANTGROVE | 2319 | — | Yes |
| 559-336 | MIRANTPHST | 2319 | — | Yes |
| 559-337 | BADGER | 2319 | — | Yes |
| 559-338 | DUNLAP | 2319 | — | Yes |
| 559-339 | PORTERVL | 671J | — | Yes |
| 559-340 | DUNLAP | 8826 | — | Yes |
| 559-341 | FRESNO | 6006 | — | Yes |
| 559-342 | PIXLEY | 7718 | — | Yes |
| 559-343 | STRATFORD | 394L | — | Yes |
| 559-344 | FOWLER | 6529 | — | Yes |
| 559-345 | LEMOORE | 981E | — | Yes |
| 559-346 | FRESNO | 9740 | — | Yes |
| 559-347 | FRESNO | 9740 | — | Yes |
| 559-348 | FRESNO | 9740 | — | Yes |
| 559-349 | FRESNO | 6010 | — | — |
| 559-350 | PORTERVL | 6529 | 2002-02-21 | Yes |
| 559-351 | FRESNO | 6529 | — | Yes |
| 559-352 | FRESNO | 5562 | — | Yes |
| 559-353 | FRESNO | 9740 | — | Yes |
| 559-354 | FRESNO | 649C | — | — |
| 559-355 | FRESNO | 6010 | — | — |
| 559-356 | PARLIER | 6006 | — | Yes |
| 559-357 | HANFORD | 6006 | 2024-03-14 | Yes |
| 559-358 | TULARE | 5562 | — | Yes |
| 559-359 | PORTERVL | 6010 | — | — |
| 559-360 | FRESNO | 6010 | — | — |
| 559-361 | PORTERVL | 6010 | — | Yes |
| 559-362 | HANFORD | 6010 | — | Yes |
| 559-363 | MADERA | 6529 | 2002-02-21 | Yes |
| 559-364 | SANJOAQUIN | 5562 | — | Yes |
| 559-365 | FRESNO | 6006 | 2011-10-10 | Yes |
| 559-366 | TULARE | 394L | — | Yes |
| 559-367 | FRESNO | 7229 | 2003-08-25 | Yes |
| 559-368 | TULARE | 6006 | 2014-11-05 | Yes |
| 559-369 | FRESNO | 252F | 2012-07-13 | Yes |
| 559-370 | THREERIVRS | 8826 | — | Yes |
| 559-371 | FRESNO | 6529 | 2016-08-30 | Yes |
| 559-372 | VISALIA | 516C | 2008-02-22 | Yes |
| 559-373 | MADERA | 6529 | 2014-11-07 | Yes |
| 559-374 | FRESNO | 373F | 2012-08-31 | Yes |
| 559-375 | FRESNO | 516C | 2005-04-06 | Yes |
| 559-376 | TERRABELLA | 981E | — | Yes |
| 559-377 | MADERA | 516C | 2015-07-09 | Yes |
| 559-378 | TULARE | 981E | 2021-10-28 | Yes |
| 559-379 | LINDSAY | 649C | 2019-06-24 | Yes |
| 559-380 | HANFORD | 649C | — | Yes |
| 559-381 | HANFORD | 6006 | — | Yes |
| 559-382 | MENDOTA | 7718 | — | Yes |
| 559-383 | AVENAL | 516C | 2009-12-14 | Yes |
| 559-384 | BURREL | 516C | 2011-01-25 | Yes |
| 559-385 | FRESNO | 8826 | 2013-06-27 | Yes |
| 559-386 | AVENAL | 9740 | — | Yes |
| 559-387 | CLOVIS | 9740 | 2013-10-31 | Yes |
| 559-388 | FRESNO | 9740 | 2006-03-07 | Yes |
| 559-389 | FRESNO | 6529 | 2006-12-02 | Yes |
| 559-390 | ALPAUGH | 671J | 2006-12-14 | Yes |
| 559-391 | REEDLEY | 671J | 2013-07-02 | Yes |
| 559-392 | CLOVIS | 6010 | — | Yes |
| 559-393 | REEDLEY | 6010 | — | Yes |
| 559-394 | FRESNO | 6010 | 2007-02-13 | Yes |
| 559-395 | MADERA | 6010 | — | Yes |
| 559-396 | FRESNO | 8826 | 2013-12-09 | Yes |
| 559-397 | DINUBA | 8826 | 2001-11-29 | Yes |
| 559-398 | BADGER | 8826 | — | Yes |
| 559-399 | SANGER | 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.