NumberResearchRecent prefix assignments
2 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
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 — NPA 548
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 |
|---|---|---|---|---|---|---|
| 2019-12-11 | 548-871 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Linwood | — |
| 2019-12-11 | 548-872 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Elmira | — |
| 2019-12-10 | 548-867 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Ayr | — |
| 2019-12-10 | 548-868 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Breslau | — |
| 2019-11-12 | 548-989 | not yet reported which blocks → | TELUS Mobility | 646F | Guelph | — |
| 2019-11-12 | 548-990 | not yet reported which blocks → | TELUS Mobility | 646F | Kitchener-Waterloo | — |
| 2019-11-12 | 548-991 | not yet reported which blocks → | TELUS Mobility | 646F | London | — |
| 2019-11-12 | 548-992 | not yet reported which blocks → | TELUS Mobility | 646F | Stratford | — |
| 2019-11-12 | 548-993 | not yet reported which blocks → | TELUS Mobility | 646F | Windsor | — |
| 2019-10-10 | 548-488 | not yet reported which blocks → | Iristel Inc. | 154E | London | — |
| 2019-10-10 | 548-489 | not yet reported which blocks → | Iristel Inc. | 154E | London | — |
| 2019-09-11 | 548-585 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Stratford | — |
| 2019-09-11 | 548-686 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Tavistock | — |
| 2019-09-11 | 548-787 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Thornbury | — |
| 2019-09-04 | 548-282 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | St. George | — |
| 2019-09-04 | 548-383 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Shakespeare | — |
| 2019-09-04 | 548-877 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Owen Sound | — |
| 2019-09-04 | 548-899 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Paris | — |
| 2019-09-03 | 548-866 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | London | — |
| 2019-09-03 | 548-889 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Kitchener-Waterloo | — |
| 2019-08-30 | 548-668 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Hespeler | — |
| 2019-08-28 | 548-558 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Galt | — |
| 2019-08-28 | 548-855 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Guelph | — |
| 2019-08-27 | 548-833 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Breslau | — |
| 2019-08-26 | 548-338 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Brantford | — |
| 2019-08-23 | 548-822 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Ayr | — |
| 2018-12-17 | 548-887 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Woodstock | — |
| 2018-11-29 | 548-885 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Brantford | — |
| 2018-09-18 | 548-883 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Kitchener-Waterloo | — |
| 2018-09-12 | 548-881 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | London | — |
| 2018-09-06 | 548-689 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | London | — |
| 2018-09-06 | 548-690 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | London | — |
| 2018-06-18 | 548-486 | not yet reported which blocks → | Iristel Inc. | 154E | London | — |
| 2018-05-02 | 548-770 | not yet reported which blocks → | Distributel | 082E | Woodslee | — |
| 2018-05-02 | 548-771 | not yet reported which blocks → | Distributel | 082E | Stoney Point | — |
| 2018-05-02 | 548-772 | not yet reported which blocks → | Distributel | 082E | Essex | — |
| 2018-05-02 | 548-773 | not yet reported which blocks → | Distributel | 082E | Harrow | — |
| 2018-05-02 | 548-774 | not yet reported which blocks → | Distributel | 082E | Maidstone | — |
| 2018-05-02 | 548-775 | not yet reported which blocks → | Distributel | 082E | Amherstburg | — |
| 2018-05-02 | 548-776 | not yet reported which blocks → | Distributel | 082E | Tecumseh | — |
| 2018-05-02 | 548-777 | not yet reported which blocks → | Distributel | 082E | La Salle | — |
| 2018-05-01 | 548-778 | not yet reported which blocks → | Distributel | 082E | Kingsville | — |
| 2018-05-01 | 548-779 | not yet reported which blocks → | Distributel | 082E | Belle River | — |
| 2018-05-01 | 548-780 | not yet reported which blocks → | Distributel | 082E | Emeryville | — |
| 2018-05-01 | 548-781 | not yet reported which blocks → | Distributel | 082E | McGregor | — |
| 2018-05-01 | 548-782 | not yet reported which blocks → | Distributel | 082E | Pleasant Park | — |
| 2018-05-01 | 548-783 | not yet reported which blocks → | Distributel | 082E | Comber | — |
| 2018-05-01 | 548-784 | not yet reported which blocks → | Distributel | 082E | Leamington | — |
| 2018-05-01 | 548-785 | not yet reported which blocks → | Distributel | 082E | Pelee Island | — |
| 2018-05-01 | 548-786 | not yet reported which blocks → | Distributel | 082E | Wheatley | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.