NumberResearchRecent prefix assignments
347 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/29/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
Most active assignees, last 30 days
New assignments by month
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-04-05 | 321-349 | 0–9 XXXall 10 · 4 holders which blocks → | BHN IP ENABLED SERVICES, LLC | 045L | COCOA | FL |
| 2017-04-05 | 331-230 | 0–9 XXXall 10 · 3 holders which blocks → | T-MOBILE USA, INC. | 6529 | AURORA | IL |
| 2017-04-05 | 331-236 | 0–9 XXXall 10 · 5 holders which blocks → | T-MOBILE USA, INC. | 6529 | WHEATON | IL |
| 2017-04-05 | 579-872 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Boucherville | — |
| 2017-04-05 | 579-876 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Granby | — |
| 2017-04-05 | 579-877 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Valleyfield | — |
| 2017-04-05 | 579-878 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Joliette | — |
| 2017-04-05 | 579-879 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Chomedey | — |
| 2017-04-05 | 581-866 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Loretteville | — |
| 2017-04-05 | 581-868 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Levis | — |
| 2017-04-05 | 581-869 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Chicoutimi | — |
| 2017-04-05 | 843-594 | 0–9 XXXall 10 · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA SC- LLC | 635C | SUMMERVL | SC |
| 2017-04-05 | 873-882 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Sherbrooke | — |
| 2017-04-05 | 873-883 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Trois-Rivieres | — |
| 2017-04-05 | 873-885 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Drummondville | — |
| 2017-04-05 | 904-441 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | FERNADNBCH | FL |
| 2017-04-04 | 205-597 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AL | 6804 | BIRMINGHAM | AL |
| 2017-04-04 | 206-887 | 0–9 XXXall 10 · 3 holders which blocks → | PEERLESS NETWORK OF WASHINGTON, LLC - WA | 159F | BAINBDG IS | WA |
| 2017-04-04 | 236-892 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Chilliwack | — |
| 2017-04-04 | 236-893 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Fort St. John | — |
| 2017-04-04 | 236-896 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Victoria | — |
| 2017-04-04 | 236-897 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Nanaimo | — |
| 2017-04-04 | 236-898 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Aldergrove | — |
| 2017-04-04 | 236-899 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Abbotsford | — |
| 2017-04-04 | 318-679 | 0XXX1XXX2XXX6XXX8XXX9XXX · 5 holders which blocks → | TELEPORT COMMUNICATIONS AMERICA LA - LLC | 653C | CROWVILLE | LA |
| 2017-04-04 | 407-576 | 0–9 XXXall 10 · 4 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | WINTERPARK | FL |
| 2017-04-04 | 417-705 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO | 5814 | SPRINGFLD | MO |
| 2017-04-04 | 510-602 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA | 6006 | FRNK MAIN | CA |
| 2017-04-04 | 518-913 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX8XXX9XXX · 8 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - NY | 4006 | ASABLFORKS | NY |
| 2017-04-04 | 587-668 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Stony Plain | — |
| 2017-04-04 | 587-669 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Slave Lake | — |
| 2017-04-04 | 587-676 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Fort McMurray | — |
| 2017-04-04 | 587-677 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Athabasca | — |
| 2017-04-04 | 587-682 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Lloydminster | — |
| 2017-04-04 | 587-683 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Hinton | — |
| 2017-04-04 | 587-829 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Wetaskiwin | — |
| 2017-04-04 | 587-861 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Leduc | — |
| 2017-04-04 | 587-862 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Red Deer | — |
| 2017-04-04 | 587-863 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Medicine Hat | — |
| 2017-04-04 | 587-865 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Grande Prairie | — |
| 2017-04-04 | 587-866 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Lethbridge | — |
| 2017-04-04 | 587-868 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Banff | — |
| 2017-04-04 | 608-530 | 0–9 XXXall 10 · 6 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | JANESVILLE | WI |
| 2017-04-04 | 614-739 | 0–9 XXXall 10 · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - OH | 4863 | REYNOLDSBG | OH |
| 2017-04-04 | 626-545 | 0–9 XXXall 10 · 4 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC | 6010 | ALHAMBRA | CA |
| 2017-04-04 | 779-238 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | ROCKFORD | IL |
| 2017-04-04 | 804-944 | 0–9 XXXall 10 · 4 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA | 6827 | RICHMOND | VA |
| 2017-04-04 | 873-881 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Maniwaki | — |
| 2017-04-04 | 904-326 | 0–9 XXXall 10 · 7 holders which blocks → | POWERTEL JACKSONVILLE LICENSES, INC. | 7472 | FERNADNBCH | FL |
| 2017-04-04 | 939-687 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → | LIBERTY COMMUNICATIONS OF PUERTO RICO LLC | 955G | GURABO | PR |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/29/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.