All assignees
779 prefixes in 318 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 318-501 | EPPS | 6214 | 2003-05-30 | Yes |
| 318-502 | COLUMBIA | 6214 | 2003-05-30 | Yes |
| 318-503 | MONROE | 6916 | — | Yes |
| 318-504 | EPPS | 3232 | 2004-10-18 | Yes |
| 318-505 | SHREVEPORT | 6505 | 2009-08-03 | Yes |
| 318-506 | DELTA | 516C | 2009-06-04 | Yes |
| 318-507 | SHREVEPORT | 6214 | 2011-10-21 | Yes |
| 318-508 | MANY | 749E | — | Yes |
| 318-509 | MONROE | 829J | — | Yes |
| 318-510 | SHREVEPORT | 6505 | 2003-05-30 | — |
| 318-511 | XXXXXXXXXX | MULT | — | — |
| 318-512 | MONROE | 6916 | — | Yes |
| 318-513 | RUSTON | 9419 | — | Yes |
| 318-514 | RUSTON | 829J | — | Yes |
| 318-515 | MER ROUGE | 612K | — | Yes |
| 318-516 | MONROE | 6916 | 2009-12-01 | Yes |
| 318-517 | SHREVEPORT | 6505 | 2009-12-08 | Yes |
| 318-518 | SHREVEPORT | 6214 | — | — |
| 318-519 | BLANCHARD | 6214 | 2010-03-24 | Yes |
| 318-520 | CASTOR | 1762 | 2004-05-19 | Yes |
| 318-521 | NATCHITCHS | 6505 | 2003-05-30 | Yes |
| 318-522 | SHREVEPORT | 321J | 2023-03-10 | Yes |
| 318-523 | HOMER | 3232 | 2002-04-29 | Yes |
| 318-524 | SHREVEPORT | 9419 | — | Yes |
| 318-525 | SHREVEPORT | 9419 | — | Yes |
| 318-526 | POLLOCK | 612K | — | Yes |
| 318-527 | NATCHITCHS | 5562 | 2002-12-03 | Yes |
| 318-528 | ALEXANDRIA | 9419 | 2009-09-03 | Yes |
| 318-529 | SHREVEPORT | 6505 | 2009-07-17 | Yes |
| 318-530 | CALHOUN | 624H | 2023-06-14 | Yes |
| 318-531 | SICILY IS | 6214 | 2002-04-19 | Yes |
| 318-532 | SHREVEPORT | 6505 | 2010-03-17 | Yes |
| 318-533 | JONESBORO | 6214 | 2004-01-09 | Yes |
| 318-534 | TULLOS | 0434 | — | Yes |
| 318-535 | WINNSBORO | 6214 | 2006-03-08 | Yes |
| 318-536 | ARCADIA | 6505 | 2010-03-17 | Yes |
| 318-537 | MONROE | 6214 | 2001-05-16 | Yes |
| 318-538 | MONROE | 181D | 2010-02-01 | Yes |
| 318-539 | SPRINGHILL | 0434 | — | Yes |
| 318-540 | SHREVEPORT | 6505 | 2010-05-11 | Yes |
| 318-541 | ALEXANDRIA | 6505 | — | Yes |
| 318-542 | ALEXANDRIA | 3232 | 2002-04-29 | Yes |
| 318-543 | LISBON | 153F | 2017-06-21 | Yes |
| 318-544 | CASTOR | 9419 | — | Yes |
| 318-545 | ALEXANDRIA | 3232 | — | Yes |
| 318-546 | COTTON VLY | 3232 | 2017-06-21 | Yes |
| 318-547 | MONROE | 6214 | — | — |
| 318-548 | RUSTON | 6505 | — | — |
| 318-549 | SHREVEPORT | 9419 | — | — |
| 318-550 | SHREVEPORT | 829J | 2001-06-12 | Yes |
| 318-551 | MONROE | 5562 | 2011-11-14 | Yes |
| 318-552 | LKPROVIDNC | 9419 | — | Yes |
| 318-553 | SHREVEPORT | 6505 | 2010-06-14 | Yes |
| 318-554 | NATCHITCHS | 829J | — | Yes |
| 318-555 | DIR ASST | MULT | — | — |
| 318-556 | BASTROP | 9419 | — | Yes |
| 318-557 | MONROE | 6214 | 2005-11-03 | Yes |
| 318-558 | MARION | 6505 | 2003-06-16 | Yes |
| 318-559 | LKPROVIDNC | 9419 | — | Yes |
| 318-560 | SHREVEPORT | 6214 | 2001-02-12 | — |
| 318-561 | ALEXANDRIA | 9419 | — | Yes |
| 318-562 | SHREVEPORT | 7488 | 2010-06-14 | Yes |
| 318-563 | MARKSVILLE | 9419 | — | Yes |
| 318-564 | SHREVEPORT | 6214 | — | — |
| 318-565 | HORNBECK | 9419 | — | Yes |
| 318-566 | RAYVILLE | 6214 | 2003-07-10 | Yes |
| 318-567 | CONVERSE | 9419 | — | Yes |
| 318-568 | DRY PRONG | 516C | 2011-02-01 | Yes |
| 318-569 | MOORINGSPT | 749E | 2016-05-18 | Yes |
| 318-570 | MONROE | 6916 | 2014-12-08 | Yes |
| 318-571 | SODODGE CY | 1727 | — | Yes |
| 318-572 | SHREVEPORT | 6916 | 2001-03-01 | Yes |
| 318-573 | SHREVEPORT | 6916 | — | Yes |
| 318-574 | TALLULAH | 9419 | — | — |
| 318-575 | MANSFIELD | 6214 | 2011-12-22 | Yes |
| 318-576 | SALINE | 9419 | — | Yes |
| 318-577 | CALHOUN | 749E | 2016-05-13 | Yes |
| 318-578 | SPRINGHILL | 6505 | 2003-07-23 | Yes |
| 318-579 | ARCADIA | 6505 | 2003-08-18 | Yes |
| 318-580 | SHREVEPORT | 6916 | 2012-01-24 | Yes |
| 318-581 | NATCHITCHS | 3232 | 2002-07-24 | Yes |
| 318-582 | MONROE | 6214 | 2011-03-18 | Yes |
| 318-583 | SALINE | 6505 | 2003-08-18 | Yes |
| 318-584 | SHREVEPORT | 6505 | 2004-01-21 | Yes |
| 318-585 | SHREVEPORT | 749E | 2016-07-08 | Yes |
| 318-586 | FLORIEN | 9419 | — | Yes |
| 318-587 | COTTONPORT | 6505 | 2004-03-26 | Yes |
| 318-588 | SHREVEPORT | 6505 | 2004-04-23 | Yes |
| 318-589 | ALEXANDRIA | 5562 | 2017-07-25 | Yes |
| 318-590 | MANY | 9419 | — | Yes |
| 318-591 | OIL CITY | 749E | 2016-05-18 | Yes |
| 318-592 | ALEXANDRIA | 6916 | 2017-08-30 | Yes |
| 318-593 | BASTROP | 127J | 2017-10-25 | Yes |
| 318-594 | COLUMBIA | 6214 | 2009-08-28 | Yes |
| 318-595 | DUBACH | 3232 | 2004-10-18 | Yes |
| 318-596 | GRAMBLING | 3232 | 2004-10-20 | Yes |
| 318-597 | MARKSVILLE | 9419 | — | Yes |
| 318-598 | STERLINGTN | 3232 | 2004-10-20 | Yes |
| 318-599 | CALHOUN | 3232 | 2004-10-20 | Yes |
| 318-600 | MONROE | 732J | — | 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.