All assignees
719 prefixes in 620 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 620-501 | MEDICNLODG | 9533 | 2001-06-07 | Yes |
| 620-502 | HAVEN | 986E | 2021-06-10 | Yes |
| 620-503 | MCPHERSON | 205F | 2021-06-09 | Yes |
| 620-504 | MCPHERSON | 9533 | 2001-06-07 | Yes |
| 620-505 | COFFEYVL | 6267 | — | Yes |
| 620-506 | ARKANSASCY | 2240 | 2001-06-07 | Yes |
| 620-507 | WELLINGTON | 9533 | 2001-06-07 | Yes |
| 620-508 | PRATT | 9533 | 2001-06-07 | Yes |
| 620-509 | LYONS | 2240 | 2001-06-07 | Yes |
| 620-510 | SUBLETTE | 9533 | 2001-06-08 | Yes |
| 620-511 | XXXXXXXXXX | MULT | — | — |
| 620-512 | OXFORD | 986E | 2021-06-18 | Yes |
| 620-513 | HUTCHINSON | 7421 | — | Yes |
| 620-514 | WELLINGTON | 2240 | — | Yes |
| 620-515 | COFFEYVL | 6267 | — | Yes |
| 620-516 | ARLINGTON | 122D | 2009-03-12 | Yes |
| 620-517 | CALDWELL | 6532 | 2008-03-25 | Yes |
| 620-518 | ASHLAND | 6532 | 2008-03-20 | Yes |
| 620-519 | WALTON | 986E | 2021-06-22 | Yes |
| 620-520 | KINCAID | 205F | 2019-08-08 | Yes |
| 620-521 | GARDENCITY | 6534 | — | — |
| 620-522 | THAYER | 2240 | 2014-04-07 | Yes |
| 620-523 | DODGE CITY | 642H | 2015-06-12 | Yes |
| 620-524 | BURRTON | 205F | 2017-04-28 | Yes |
| 620-525 | BURDETT | 1777 | — | Yes |
| 620-526 | LEROY | 593K | 2016-11-22 | Yes |
| 620-527 | ROZEL | 1777 | — | Yes |
| 620-528 | ALLEN | 1829 | — | — |
| 620-529 | ST PAUL | 965H | 2019-03-20 | Yes |
| 620-530 | CLEARWATER | 211D | 2005-09-27 | Yes |
| 620-531 | DURHAM | 2240 | 2017-04-14 | Yes |
| 620-532 | KINGMAN | 9533 | — | Yes |
| 620-533 | LITTLE RIV | 122D | 2016-12-12 | Yes |
| 620-534 | ALDEN | 1810 | — | — |
| 620-535 | BURDEN | 211D | 2007-06-05 | — |
| 620-536 | WINDOM | 205F | 2017-04-28 | Yes |
| 620-537 | BUFFALO | 1810 | — | Yes |
| 620-538 | ARLINGTON | 1810 | — | — |
| 620-539 | ENGLEWOOD | 1841 | — | Yes |
| 620-540 | HOWARD | 073H | 2021-07-27 | Yes |
| 620-541 | HUGOTON | 401D | 2006-12-20 | Yes |
| 620-542 | COYVILLE | 205F | 2017-04-28 | Yes |
| 620-543 | BUHLER | 1842 | — | Yes |
| 620-544 | HUGOTON | 1817 | — | — |
| 620-545 | CLEARWATER | 1833 | — | Yes |
| 620-546 | IUKA | 1831 | — | — |
| 620-547 | HIATTVILLE | 1818 | — | — |
| 620-548 | MULLINVL | 1780 | — | Yes |
| 620-549 | ST JOHN | 1810 | — | — |
| 620-550 | INDEPNDNCE | 6267 | — | Yes |
| 620-551 | LEBO | 205F | 2017-04-28 | Yes |
| 620-552 | CHASE | 205F | 2021-06-23 | Yes |
| 620-553 | KINGMAN | 6267 | — | Yes |
| 620-554 | ULYSSES | 401D | 2006-12-19 | Yes |
| 620-555 | DIR ASST | MULT | — | — |
| 620-556 | LIBERAL | 6534 | 2021-07-27 | Yes |
| 620-557 | LEHIGH | 205F | 2017-04-28 | Yes |
| 620-558 | RIVERTON | 425J | 2021-10-04 | Yes |
| 620-559 | EUREKA | 205F | 2021-11-04 | Yes |
| 620-560 | HUTCHINSON | 9533 | 2002-01-30 | Yes |
| 620-561 | DODGE CITY | 401D | — | Yes |
| 620-562 | BUSHTON | 1781 | — | Yes |
| 620-563 | PLAINS | 9533 | — | Yes |
| 620-564 | ELLINWOOD | 1842 | — | — |
| 620-565 | HEWINS | 2030 | — | — |
| 620-566 | ELLINWOOD | 122D | 2005-09-14 | Yes |
| 620-567 | PARTRIDGE | 1810 | — | — |
| 620-568 | ALTOONA | 1810 | — | Yes |
| 620-569 | GARFIELD | 1777 | — | Yes |
| 620-570 | MORAN | 205F | 2019-08-08 | Yes |
| 620-571 | MEADE | 014E | 2021-12-17 | Yes |
| 620-572 | COPELAND | 014E | 2022-01-04 | Yes |
| 620-573 | ENGLEWOOD | 014E | 2022-01-04 | Yes |
| 620-574 | FORD | 014E | 2022-01-04 | Yes |
| 620-575 | ULYSSES | 1817 | — | Yes |
| 620-576 | INGALLS | 014E | 2022-01-04 | Yes |
| 620-577 | INDEPNDNCE | 2240 | 2002-04-29 | Yes |
| 620-578 | MONTEZUMA | 014E | 2022-01-04 | Yes |
| 620-579 | SPEARVILLE | 014E | 2022-01-04 | Yes |
| 620-580 | PARSONS | 6701 | 2023-01-11 | Yes |
| 620-581 | BAXTER SPG | 6529 | 2022-01-31 | Yes |
| 620-582 | COLDWATER | 9533 | — | Yes |
| 620-583 | EUREKA | 9533 | — | Yes |
| 620-584 | CLEARWATER | 1833 | — | — |
| 620-585 | INMAN | 1810 | — | — |
| 620-586 | OLMITZ | 1826 | — | Yes |
| 620-587 | CLAFLIN | 1810 | — | — |
| 620-588 | CLAFLIN | 300C | 2004-08-19 | — |
| 620-589 | CUNNINGHAM | 4548 | 2022-02-23 | Yes |
| 620-590 | WINFIELD | 6534 | 2022-03-18 | Yes |
| 620-591 | EMPORIA | 8995 | — | Yes |
| 620-592 | RICHFIELD | 1817 | — | — |
| 620-593 | ROLLA | 1817 | — | Yes |
| 620-594 | SAWYER | 1780 | — | — |
| 620-595 | MOSCOW | 401D | 2006-12-19 | Yes |
| 620-596 | LANGDON | 1810 | — | Yes |
| 620-597 | HALLOWELL | 1818 | — | — |
| 620-598 | MOSCOW | 1817 | — | — |
| 620-599 | PRESTON | 205F | 2020-10-02 | Yes |
| 620-600 | ELKHART | 401D | 2011-01-20 | 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.