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
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 |
|---|---|---|---|---|---|---|
| 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 | — |
| 2010-12-01 | 587-799 | not yet reported which blocks → | Distributel | 081E | Stettler | — |
| 2010-12-01 | 613-518 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Ottawa-Hull | — |
| 2010-12-01 | 647-712 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2010-12-01 | 647-713 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2010-12-01 | 647-719 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2010-12-01 | 647-720 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2010-12-01 | 647-721 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Toronto | — |
| 2010-12-01 | 778-747 | not yet reported which blocks → | Distributel | 081E | Victoria | — |
| 2010-12-01 | 778-748 | not yet reported which blocks → | Distributel | 081E | Cobble Hill | — |
| 2010-12-01 | 778-749 | not yet reported which blocks → | Distributel | 081E | Saanich | — |
| 2010-12-01 | 803-500 | 0–9 XXXall 10 · 6 holders which blocks → | BANDWIDTH.COM CLEC, LLC - SC | 077F | PROSPERITY | SC |
| 2010-11-30 | 252-484 | 0–9 XXXall 10 · 5 holders which blocks → | MCC TELEPHONY LLC | 593K | WINDSOR | NC |
| 2010-11-30 | 267-423 | 0–9 XXXall 10 · 2 holders which blocks → | OMNIPOINT COMMUNICATIONS ENTERPRISES, LP | 6626 | PHLDLPHZN4 | PA |
| 2010-11-30 | 270-815 | 1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | MCC TELEPHONY OF THE SOUTH, LLC - KY | 781F | EDMONTON | KY |
| 2010-11-30 | 289-716 | not yet reported which blocks → | TELUS Mobility | 8303 | Newmarket | — |
| 2010-11-30 | 502-436 | 0–9 XXXall 10 · 3 holders which blocks → | MCC TELEPHONY OF THE SOUTH, LLC - KY | 781F | LOUISVILLE | KY |
| 2010-11-30 | 506-233 | not yet reported which blocks → | TELUS Mobility | 8303 | Moncton | — |
| 2010-11-30 | 579-394 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Sabine | — |
| 2010-11-30 | 587-201 | not yet reported which blocks → | TELUS Mobility | 8301 | Bonnyville | — |
| 2010-11-30 | 906-352 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 7 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | MENOMINEE | MI |
| 2010-11-30 | 920-393 | 0–9 XXXall 10 · 4 holders which blocks → | TWC IP ENABLED SERVICES, LLC | 793K | GREEN BAY | WI |
| 2010-11-29 | 251-500 | 0–9 XXXall 10 · 4 holders which blocks → | MCC TELEPHONY OF THE SOUTH, LLC - AL | 773F | FOLEY | AL |
| 2010-11-29 | 306-339 | not yet reported which blocks → | SaskTel Mobility | 9868 | Carnduff | — |
| 2010-11-29 | 306-470 | not yet reported which blocks → | SaskTel Mobility | 9868 | Hudson Bay | — |
| 2010-11-29 | 306-491 | not yet reported which blocks → | SaskTel Mobility | 9868 | Saskatoon | — |
| 2010-11-29 | 306-812 | not yet reported which blocks → | SaskTel Mobility | 9868 | Nipawin | — |
| 2010-11-29 | 306-813 | not yet reported which blocks → | SaskTel Mobility | 9868 | Porcupine Plain | — |
| 2010-11-29 | 306-814 | not yet reported which blocks → | SaskTel Mobility | 9868 | Preeceville | — |
| 2010-11-29 | 306-815 | not yet reported which blocks → | SaskTel Mobility | 9868 | Radville | — |
| 2010-11-29 | 306-840 | not yet reported which blocks → | SaskTel Mobility | 9868 | Redvers | — |
| 2010-11-29 | 306-841 | not yet reported which blocks → | SaskTel Mobility | 9868 | Spiritwood | — |
| 2010-11-29 | 306-852 | not yet reported which blocks → | SaskTel Mobility | 9868 | Tisdale | — |
| 2010-11-29 | 306-853 | not yet reported which blocks → | SaskTel Mobility | 9868 | Whitewood | — |
| 2010-11-29 | 306-901 | not yet reported which blocks → | SaskTel Mobility | 9868 | Wolseley | — |
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.