NumberResearchRecent prefix assignments
338 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2010-12-08 | 910-721 | 0–9 XXXall 10 · 5 holders which blocks → | ATLANTIC TEL. MEMBERSHIP CORP. | 0468 | SHALLOTTE | NC |
| 2010-12-08 | 912-513 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 3 holders which blocks → | GEORGIA WINDSTREAM, INC. | 4425 | RINCON | GA |
| 2010-12-07 | 201-205 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | JERSEYCITY | NJ |
| 2010-12-07 | 201-702 | 0–9 XXXall 10 · 4 holders which blocks → | METROPCS, INC. | 5562 | KEARNY | NJ |
| 2010-12-07 | 240-300 | 0–9 XXXall 10 · 3 holders which blocks → | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD | 6395 | WALDORF | MD |
| 2010-12-07 | 347-717 | 0–9 XXXall 10 · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | NWYRCYZN03 | NY |
| 2010-12-07 | 517-235 | 0–9 XXXall 10 · 4 holders which blocks → | AT&T ENTERPRISES, LLC | 516C | DIMONDALE | MI |
| 2010-12-07 | 587-885 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Calgary | — |
| 2010-12-07 | 607-414 | 0–9 XXXall 10 · 7 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | NICHOLS | NY |
| 2010-12-07 | 709-774 | not yet reported which blocks → | Bell Mobility Aliant | 329A | Roddickton | — |
| 2010-12-07 | 709-775 | not yet reported which blocks → | Bell Mobility Aliant | 329A | Jeffreys | — |
| 2010-12-07 | 980-819 | 0–9 XXXall 10 · 4 holders which blocks → | MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NC | 7835 | CHARLOTTE | NC |
| 2010-12-07 | 989-564 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | AT&T ENTERPRISES, LLC | 516C | LINWOOD | MI |
| 2010-12-06 | 217-212 | 0–9 XXXall 10 · 4 holders which blocks → | AT&T ENTERPRISES, LLC | 516C | FITHIAN | IL |
| 2010-12-06 | 347-780 | 0–9 XXXall 10 · 2 holders which blocks → | METROPCS, INC. | 5562 | NWYRCYZN03 | NY |
| 2010-12-06 | 581-883 | not yet reported which blocks → | TELUS Mobility | 8303 | Grande-Vallee | — |
| 2010-12-06 | 709-377 | not yet reported which blocks → | Bell Mobility Aliant | 329A | Grand Bank | — |
| 2010-12-06 | 778-485 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | 108 Mile House | — |
| 2010-12-06 | 813-399 | 0–9 XXXall 10 · 2 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | TAMPACEN | FL |
| 2010-12-06 | 902-776 | not yet reported which blocks → | Bell Mobility Aliant | 329A | Ingonish | — |
| 2010-12-03 | 604-620 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Vancouver | — |
| 2010-12-03 | 613-502 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Gloucester | — |
| 2010-12-03 | 613-508 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Carleton Place | — |
| 2010-12-03 | 613-509 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Kanata-Stittsville | — |
| 2010-12-03 | 613-510 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Orleans | — |
| 2010-12-03 | 613-512 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Jockvale | — |
| 2010-12-03 | 613-516 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Osgoode | — |
| 2010-12-03 | 613-517 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Cumberland | — |
| 2010-12-03 | 778-265 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Victoria | — |
| 2010-12-03 | 780-705 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Edmonton | — |
| 2010-12-03 | 980-222 | 0–9 XXXall 10 · 7 holders which blocks → | SOUTH CAROLINA NET, INC. - NC | 511C | DENVER | NC |
| 2010-12-02 | 216-442 | 0–9 XXXwhole prefix which blocks → | OHIO BELL TEL CO | 9321 | CLEVELAND | OH |
| 2010-12-02 | 234-755 | 0–9 XXXall 10 · 7 holders which blocks → | AT&T ENTERPRISES, LLC | 516C | MANTUA | OH |
| 2010-12-02 | 469-300 | 0–9 XXXall 10 · 3 holders which blocks → | BANDWIDTH.COM CLEC, LLC - TX | 004F | BARDWELL | TX |
| 2010-12-02 | 512-900 | 0–9 XXXall 10 · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - TX | 6114 | AUSTIN | TX |
| 2010-12-02 | 731-300 | 0–9 XXXall 10 · 5 holders which blocks → | JACKSON ENERGY AUTHORITY - TN | 150G | JACKSON | TN |
| 2010-12-02 | 775-400 | 0–9 XXXall 10 · 4 holders which blocks → | T-MOBILE USA, INC. | 6529 | CARSONCITY | NV |
| 2010-12-02 | 813-400 | 0–9 XXXall 10 · 3 holders which blocks → | AERIAL COMMUNICATIONS, INC. | 6701 | TAMPACEN | FL |
| 2010-12-02 | 956-599 | 0–9 XXXall 10 · 2 holders which blocks → | NEW CINGULAR WIRELESS PCS, LLC - IL | 6534 | MISSION | TX |
| 2010-12-01 | 216-285 | 0–9 XXXall 10 · 4 holders which blocks → | OHIO BELL TEL CO | 9321 | TERRACE | OH |
| 2010-12-01 | 306-490 | not yet reported which blocks → | SaskTel Mobility | 9868 | North Battleford | — |
| 2010-12-01 | 306-941 | not yet reported which blocks → | SaskTel Mobility | 9868 | Prince Albert | — |
| 2010-12-01 | 309-575 | not yet reported which blocks → | MTC COMMUNICATIONS, INC. - IL | 342F | MACOMB | IL |
| 2010-12-01 | 581-623 | not yet reported which blocks → | TELUS Mobility | 8303 | Forestville | — |
| 2010-12-01 | 587-787 | not yet reported which blocks → | Distributel | 081E | Lethbridge | — |
| 2010-12-01 | 587-788 | not yet reported which blocks → | Distributel | 081E | Pincher Creek | — |
| 2010-12-01 | 587-795 | not yet reported which blocks → | Distributel | 081E | Drumheller | — |
| 2010-12-01 | 587-796 | not yet reported which blocks → | Distributel | 081E | Olds | — |
| 2010-12-01 | 587-797 | not yet reported which blocks → | Distributel | 081E | Red Deer | — |
| 2010-12-01 | 587-798 | not yet reported which blocks → | Distributel | 081E | Rocky Mountain House | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.