NumberResearchRecent prefix assignments
354 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/22/2026
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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2022-10-12 | 910-971 | 0XXX1XXX2XXX · 2 holders which blocks → | NUSO, LLC | 732J | WEST END | NC |
| 2022-10-12 | 910-982 | 1XXX2XXX8XXX · 2 holders which blocks → | NUSO, LLC | 732J | HAMLET | NC |
| 2022-10-12 | 917-917 | 0–9 XXXwhole prefix which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | NWYRCYZN12 | NY |
| 2022-10-12 | 929-929 | 0–9 XXXwhole prefix which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | NWYRCYZN13 | NY |
| 2022-10-12 | 945-275 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | GRANDPRARI | TX |
| 2022-10-12 | 945-276 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 6506 | MCKINNEY | TX |
| 2022-10-12 | 980-394 | 0–9 XXXall 10 · 4 holders which blocks → | NUSO, LLC | 732J | BELMONT | NC |
| 2022-10-12 | 984-306 | 0–9 XXXall 10 · 2 holders which blocks → | NUSO, LLC | 732J | CARY | NC |
| 2022-10-11 | 223-867 | 0–9 XXXall 10 · 2 holders which blocks → | COMMIO, LLC | 939H | HANOVER | PA |
| 2022-10-11 | 262-887 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | METROPCS, INC. | 5562 | WHITEWATER | WI |
| 2022-10-11 | 276-279 | 0–9 XXXwhole prefix which blocks → | NEW CINGULAR WIRELESS PCS, LLC - GA | 6214 | ABINGDON | VA |
| 2022-10-11 | 437-365 | not yet reported which blocks → | Videotron Ltd. | 787G | Toronto | — |
| 2022-10-11 | 437-376 | not yet reported which blocks → | Videotron Ltd. | 787G | Toronto | — |
| 2022-10-11 | 437-410 | not yet reported which blocks → | Videotron Ltd. | 787G | Toronto | — |
| 2022-10-11 | 437-434 | not yet reported which blocks → | Videotron Ltd. | 787G | Toronto | — |
| 2022-10-11 | 437-443 | not yet reported which blocks → | Videotron Ltd. | 787G | Toronto | — |
| 2022-10-11 | 463-279 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | INDIANAPLS | IN |
| 2022-10-11 | 480-916 | 0–9 XXXwhole prefix which blocks → | ONVOY, LLC - AZ | 630E | PHOENIX | AZ |
| 2022-10-11 | 506-680 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Doaktown | — |
| 2022-10-11 | 516-516 | 0–9 XXXwhole prefix which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | NASSAUZN02 | NY |
| 2022-10-11 | 561-895 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | WPALMBEACH | FL |
| 2022-10-11 | 572-867 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | COMMIO, LLC | 939H | MOORE | OK |
| 2022-10-11 | 574-391 | 1XXX2XXX which blocks → | NUSO, LLC | 732J | KEWANNA | IN |
| 2022-10-11 | 579-382 | not yet reported which blocks → | Fibernetics Corporation | 464D | St-Lambert | — |
| 2022-10-11 | 581-406 | not yet reported which blocks → | Fibernetics Corporation | 464D | Chicoutimi | — |
| 2022-10-11 | 606-867 | 0–9 XXXall 10 · 3 holders which blocks → | COMMIO, LLC | 939H | BARBOURVL | KY |
| 2022-10-11 | 607-607 | 0–9 XXXwhole prefix which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | TRUMANSBG | NY |
| 2022-10-11 | 616-867 | 0XXX1XXX3XXX5XXX6XXX7XXX · 4 holders which blocks → | COMMIO, LLC | 939H | ROCKFORD | MI |
| 2022-10-11 | 631-631 | 0–9 XXXwhole prefix which blocks → | BANDWIDTH.COM CLEC, LLC - NY | 997E | FIREISLAND | NY |
| 2022-10-11 | 657-623 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | ANAHEIM | CA |
| 2022-10-11 | 661-602 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - CA | 981E | BKFD SOUTH | CA |
| 2022-10-11 | 667-415 | 0–9 XXXwhole prefix which blocks → | OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC | 6855 | ABERDEEN | MD |
| 2022-10-11 | 672-377 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2022-10-11 | 672-699 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Vancouver | — |
| 2022-10-11 | 680-246 | 0–9 XXXall 10 · 3 holders which blocks → | PEERING HUB, INC. - NY | 818H | CICERO | NY |
| 2022-10-11 | 680-248 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 4 holders which blocks → | PEERING HUB, INC. - NY | 818H | BALDWINSVL | NY |
| 2022-10-11 | 680-249 | 0XXX1XXX8XXX9XXX · 4 holders which blocks → | PEERING HUB, INC. - NY | 818H | CHITTENNGO | NY |
| 2022-10-11 | 680-251 | 0XXX1XXX8XXX9XXX · 2 holders which blocks → | PEERING HUB, INC. - NY | 818H | CANTON | NY |
| 2022-10-11 | 680-252 | 0XXX2XXX · 2 holders which blocks → | PEERING HUB, INC. - NY | 818H | BELLEVILLE | NY |
| 2022-10-11 | 680-680 | 0–9 XXXwhole prefix which blocks → | EXIANT COMMUNICATIONS LLC | 114J | PHELPS | NY |
| 2022-10-11 | 716-657 | 0XXX1XXX2XXX3XXX4XXX6XXX7XXX which blocks → | ONVOY, LLC- NY | 384C | BUFFALO | NY |
| 2022-10-11 | 725-287 | 0–9 XXXall 10 · 2 holders which blocks → | T-MOBILE USA, INC. | 6529 | LAS VEGAS | NV |
| 2022-10-11 | 725-289 | 0–9 XXXwhole prefix which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NV | 6458 | LAUGHLIN | NV |
| 2022-10-11 | 725-325 | 0–9 XXXall 10 · 3 holders which blocks → | ONVOY, LLC - NV | 029F | LAUGHLIN | NV |
| 2022-10-11 | 726-232 | 0–9 XXXall 10 · 4 holders which blocks → | ONVOY, LLC - TX | 903C | SANANTONIO | TX |
| 2022-10-11 | 771-217 | 0–9 XXXall 10 · 3 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - DC | 4036 | WSHNGTNZN1 | DC |
| 2022-10-11 | 772-278 | 0–9 XXXall 10 · 2 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - FL | 6502 | HOBE SOUND | FL |
| 2022-10-11 | 808-830 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | WAILUKU | HI |
| 2022-10-11 | 815-763 | 0–9 XXXall 10 · 6 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL | 6333 | JOLIET | IL |
| 2022-10-11 | 830-381 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | NEWBRANFLS | TX |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/22/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.