All assignees
703 prefixes in 661 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 661-400 | PLDL PLDL | 6010 | — | — |
| 661-401 | BKFD MAIN | 6006 | 2010-08-11 | Yes |
| 661-402 | PLDL AGDL | 899D | 2011-02-04 | Yes |
| 661-403 | PLDL PLDL | 6529 | 2017-01-16 | Yes |
| 661-404 | BKFD MAIN | 073H | 2016-12-15 | Yes |
| 661-405 | LANCASTER | 6010 | 2017-08-01 | Yes |
| 661-406 | PLDL PLDL | 6010 | — | — |
| 661-407 | BKFD MAIN | 145J | — | Yes |
| 661-408 | — | — | ||
| 661-409 | PLDL PLDL | 899D | 2017-06-30 | Yes |
| 661-410 | BKFD NORTH | 671J | 2001-03-01 | Yes |
| 661-411 | XXXXXXXXXX | MULT | — | — |
| 661-412 | BKFD SOUTH | 516C | 2008-04-02 | Yes |
| 661-413 | CUYAMA | 981E | — | Yes |
| 661-414 | SNCA NHCS | 7718 | — | Yes |
| 661-415 | — | — | ||
| 661-416 | ARVIN | 6529 | 2016-08-29 | Yes |
| 661-417 | SNCA NHCS | 899D | 2017-06-30 | Yes |
| 661-418 | LANCASTER | 6529 | 2012-02-24 | Yes |
| 661-419 | HI VISTA | 0051 | 2018-07-31 | — |
| 661-420 | CUYAMA | 8826 | — | Yes |
| 661-421 | BKFD MAIN | 6529 | 2015-03-09 | Yes |
| 661-422 | PLDL LNVY | 981E | — | Yes |
| 661-423 | LANCASTER | 2319 | — | — |
| 661-424 | SNCA SGCC | 9740 | — | Yes |
| 661-425 | SNCA NHCS | 981E | 2014-03-21 | Yes |
| 661-426 | BKFD MAIN | 649C | 2013-01-14 | Yes |
| 661-427 | BKFD MAIN | 5562 | — | Yes |
| 661-428 | BKFD MAIN | 6006 | 2001-02-09 | — |
| 661-429 | LANCASTER | 6529 | 2012-09-24 | Yes |
| 661-430 | SNCA SGCC | 8826 | — | Yes |
| 661-431 | BKFD MAIN | 671J | 2005-05-16 | Yes |
| 661-432 | BKFD MAIN | 6006 | 2012-08-30 | Yes |
| 661-433 | PLDL PLDL | 6006 | — | — |
| 661-434 | PLDL PLDL | 6006 | 2011-11-11 | Yes |
| 661-435 | PLDL PLDL | 6010 | — | — |
| 661-436 | ARVIN | 516C | 2009-12-14 | Yes |
| 661-437 | BKFD MAIN | 5562 | 2012-08-28 | Yes |
| 661-438 | WASCO | 8826 | — | Yes |
| 661-439 | BKFD MAIN | 5562 | 2018-08-16 | Yes |
| 661-440 | BKFD MAIN | 5562 | 2014-04-18 | Yes |
| 661-441 | PLDL PLDL | 508J | 2013-02-01 | Yes |
| 661-442 | SNCA NHCS | 0051 | 2004-08-12 | — |
| 661-443 | WALKERBSIN | 649C | — | Yes |
| 661-444 | BKFD MAIN | 6529 | — | Yes |
| 661-445 | LANCASTER | 6529 | 2014-10-14 | Yes |
| 661-446 | DELANO | 7139 | 2012-08-07 | Yes |
| 661-447 | BKFD MAIN | 6529 | 2013-12-09 | Yes |
| 661-448 | BKFD MAIN | 551G | 2012-11-06 | Yes |
| 661-449 | PLDL PLDL | 649C | — | Yes |
| 661-450 | PLDL AGDL | 8826 | — | Yes |
| 661-451 | ARVIN | 649C | — | Yes |
| 661-452 | BERENDMESA | 073H | — | Yes |
| 661-453 | CLFRNHTSPG | 8826 | — | Yes |
| 661-454 | DELANO | 045L | — | Yes |
| 661-455 | GLENNVILLE | 8826 | — | Yes |
| 661-456 | PLDL PLDL | 8826 | — | Yes |
| 661-457 | LOST HILLS | 145J | — | Yes |
| 661-458 | MCFARLAND | 8826 | — | Yes |
| 661-459 | SHAFTER | 649C | — | Yes |
| 661-460 | WALKERBSIN | 8826 | — | Yes |
| 661-461 | LEBEC | 8826 | — | Yes |
| 661-462 | BIG BUTTE | 649C | — | Yes |
| 661-463 | HI VISTA | 649C | — | Yes |
| 661-464 | LAKEHUGHES | 649C | — | Yes |
| 661-465 | BERENDMESA | 4420 | — | Yes |
| 661-466 | LANCASTER | 649C | — | Yes |
| 661-467 | SNCA SGCC | 649C | — | — |
| 661-468 | PLDL AGDL | 515J | — | Yes |
| 661-469 | BUTTONWLLW | 045L | — | Yes |
| 661-470 | LANCASTER | 6010 | 2014-06-09 | Yes |
| 661-471 | LANCASTER | 508J | 2013-02-01 | Yes |
| 661-472 | BKFD MAIN | 6529 | 2001-12-14 | — |
| 661-473 | BKFD SOUTH | 981E | 2013-01-29 | Yes |
| 661-474 | DELANO | 6006 | 2010-03-05 | Yes |
| 661-475 | EDWARDS | 649C | — | Yes |
| 661-476 | SNCA NHCS | 6006 | 2006-06-16 | Yes |
| 661-477 | BKFD MAIN | 6006 | 2001-11-13 | Yes |
| 661-478 | PLDL PLDL | 6006 | — | — |
| 661-479 | BKFD MAIN | 373F | 2016-11-18 | Yes |
| 661-480 | PLDL PLDL | 7229 | 2006-08-25 | Yes |
| 661-481 | SNCA NHCS | 373F | 2013-03-09 | Yes |
| 661-482 | EDWARDS | 793K | 2013-03-12 | Yes |
| 661-483 | LANCASTER | 6006 | 2014-06-24 | Yes |
| 661-484 | BKFD SOUTH | 6006 | 2019-10-30 | Yes |
| 661-485 | PLDL PLDL | 899D | 2014-01-08 | Yes |
| 661-486 | PLDL AGDL | 899D | 2014-03-21 | Yes |
| 661-487 | BKFD MAIN | 6010 | 2005-03-01 | Yes |
| 661-488 | LANCASTER | 6529 | 2014-12-22 | Yes |
| 661-489 | BKFD MAIN | 981E | 2014-04-22 | Yes |
| 661-490 | BKFD MAIN | 5562 | 2015-04-13 | Yes |
| 661-491 | BKFD SOUTH | 981E | — | Yes |
| 661-492 | LANCASTER | 6529 | 2001-10-10 | Yes |
| 661-493 | BKFD MAIN | 671J | 2014-04-25 | Yes |
| 661-494 | LANCASTER | 6010 | 2014-10-08 | Yes |
| 661-495 | SNCA NHCS | 649C | — | Yes |
| 661-496 | BKFD MAIN | 6010 | — | — |
| 661-497 | BKFD MAIN | 5562 | 2014-12-24 | Yes |
| 661-498 | BKFD NORTH | 197D | 2018-11-26 | Yes |
| 661-499 | LANCASTER | 996H | 2020-05-19 | 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.