All assignees
668 prefixes in 606 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 606-503 | HARLAN | 896E | — | Yes |
| 606-504 | FREEBURN | 6214 | — | — |
| 606-505 | HARLAN | 6940 | 2007-09-21 | — |
| 606-506 | PRESTONSBG | 612K | 2013-11-01 | Yes |
| 606-507 | CORBIN | 6214 | 2025-04-16 | Yes |
| 606-508 | CUMBERLAND | 6940 | 2008-10-31 | Yes |
| 606-509 | PIKEVILLE | 896E | — | Yes |
| 606-510 | STANFORD | 6500 | — | Yes |
| 606-511 | XXXXXXXXXX | MULT | — | — |
| 606-513 | STAFORDSVL | 365C | 2025-04-17 | Yes |
| 606-514 | SOMERSET | 896E | — | Yes |
| 606-515 | WILLIAMSBG | 6500 | — | Yes |
| 606-516 | STNSWHLYCY | 6500 | — | Yes |
| 606-517 | PINE KNOT | 4369 | — | Yes |
| 606-518 | FEDSCREEK | 829J | 2010-06-14 | Yes |
| 606-519 | STONE | 612K | — | Yes |
| 606-521 | CORBIN | 6214 | — | — |
| 606-522 | JEPTHA | 0414 | — | — |
| 606-523 | CORBIN | 9419 | — | — |
| 606-524 | CORBIN | 6214 | — | — |
| 606-525 | SOWILLIMSN | 6940 | 2008-11-13 | — |
| 606-526 | CORBIN | 9419 | — | — |
| 606-527 | STAFORDSVL | 6940 | 2007-09-21 | — |
| 606-528 | CORBIN | 9419 | — | — |
| 606-529 | CORBIN | 824J | 2026-05-27 | Yes |
| 606-530 | MARTIN | 7229 | 2013-11-26 | Yes |
| 606-531 | IRVINE | 896E | — | Yes |
| 606-532 | GARRISON | 9690 | 2012-01-30 | Yes |
| 606-534 | INEZ | 6214 | 2002-06-05 | Yes |
| 606-535 | EUBANK | 793K | 2011-12-27 | Yes |
| 606-536 | WHITESBURG | 4369 | 2002-04-10 | Yes |
| 606-538 | HYDEN | 6940 | 2007-10-12 | Yes |
| 606-539 | WILLIAMSBG | 9419 | — | — |
| 606-540 | CORBIN | 6214 | 2025-04-23 | Yes |
| 606-541 | VANCEBURG | 6214 | 2002-04-11 | Yes |
| 606-542 | FLAT LICK | 9691 | — | — |
| 606-543 | EVARTS | 9691 | 2012-01-30 | Yes |
| 606-545 | BARBOURVL | 9691 | — | Yes |
| 606-546 | BARBOURVL | 9691 | — | — |
| 606-547 | MEADS | 4369 | 2002-04-10 | Yes |
| 606-548 | MOREHEAD | 6500 | 2009-06-24 | Yes |
| 606-549 | WILLIAMSBG | 9419 | — | — |
| 606-551 | HAZARD | 896E | 2007-04-17 | Yes |
| 606-552 | PIKEVILLE | 365C | 2016-06-23 | Yes |
| 606-554 | VIRGIE | 7229 | 2010-04-26 | Yes |
| 606-555 | DIR ASST | MULT | — | — |
| 606-557 | ALBANY | 593K | 2010-12-29 | Yes |
| 606-558 | BLEDSOE | 0411 | — | Yes |
| 606-559 | BURNSIDE | 9690 | 2012-01-30 | Yes |
| 606-560 | BEATTYVL | 6214 | 2002-06-05 | Yes |
| 606-561 | BURNSIDE | 9690 | — | — |
| 606-562 | HARLAN | 6214 | — | — |
| 606-563 | MAYSVILLE | 9419 | — | — |
| 606-564 | MAYSVILLE | 9419 | — | — |
| 606-566 | STAFORDSVL | 965H | 2020-10-09 | Yes |
| 606-567 | BEATTYVL | 6940 | 2003-04-04 | — |
| 606-568 | JACKSON | 6940 | 2003-04-04 | — |
| 606-569 | STANTON | 6940 | 2003-04-04 | — |
| 606-571 | ASHLAND | 365C | — | Yes |
| 606-572 | CORBIN | 6214 | 2025-04-23 | Yes |
| 606-573 | HARLAN | 9419 | — | — |
| 606-574 | HARLAN | 9419 | — | — |
| 606-575 | MONTICELLO | 6500 | — | Yes |
| 606-576 | MIDDLESBO | 793K | — | Yes |
| 606-578 | JENKINS | 9691 | 2017-11-21 | Yes |
| 606-579 | PIKEVILLE | 6214 | 2026-05-13 | Yes |
| 606-581 | CORBIN | 6214 | 2025-12-15 | Yes |
| 606-582 | CORBIN | 6214 | 2025-12-15 | Yes |
| 606-584 | MAYSVILLE | 6214 | — | — |
| 606-585 | MEADS | 419C | 2007-07-31 | Yes |
| 606-586 | WAYLAND | 896E | 2022-12-07 | Yes |
| 606-587 | GRETHEL | 0408 | — | — |
| 606-588 | STNSWHLYCY | 6214 | 2015-09-01 | Yes |
| 606-589 | CUMBERLAND | 9691 | — | — |
| 606-591 | — | — | ||
| 606-593 | BOONEVILLE | 0415 | — | — |
| 606-594 | MANCHESTER | 6500 | 2003-09-12 | Yes |
| 606-595 | BARBOURVL | 6500 | 2003-09-12 | Yes |
| 606-596 | MANCHESTER | 9691 | — | — |
| 606-598 | MANCHESTER | 9691 | — | — |
| 606-599 | MANCHESTER | 9691 | — | Yes |
| 606-600 | BEATTYVL | 829J | 2003-06-30 | Yes |
| 606-601 | ALLEN | 829J | 2003-06-30 | Yes |
| 606-602 | MOREHEAD | 624H | 2024-02-06 | Yes |
| 606-603 | SOWILLIMSN | 6214 | 2002-06-05 | Yes |
| 606-604 | JACKSON | 829J | 2003-06-30 | Yes |
| 606-605 | PIKEVILLE | 829J | 2003-06-30 | — |
| 606-606 | — | — | ||
| 606-607 | SOWILLIMSN | 896E | — | Yes |
| 606-608 | SOMERSET | 624H | 2024-02-06 | Yes |
| 606-609 | EWING | 624H | 2021-02-05 | Yes |
| 606-610 | MOREHEAD | 896E | — | Yes |
| 606-611 | XXXXXXXXXX | MULT | — | — |
| 606-612 | STANTON | 829J | 2003-06-30 | Yes |
| 606-613 | WARFIELD | 829J | 2003-06-30 | Yes |
| 606-614 | IRVINE | 829J | 2003-06-30 | Yes |
| 606-615 | ASHLAND | 5562 | — | Yes |
| 606-616 | PIKEVILLE | 6940 | — | — |
| 606-617 | EVARTS | 896E | — | — |
| 606-618 | ASHLAND | 4369 | 2002-09-24 | 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.