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 |
|---|---|---|---|---|---|---|
| 2021-09-27 | 548-549 | not yet reported which blocks → | Fibernetics Corporation | 464D | Tavistock | — |
| 2021-09-22 | 548-256 | not yet reported which blocks → | Fibernetics Corporation | 464D | Orangeville | — |
| 2021-08-27 | 548-356 | not yet reported which blocks → | Fibernetics Corporation | 464D | Cargill | — |
| 2021-08-27 | 548-357 | not yet reported which blocks → | Fibernetics Corporation | 464D | Chatsworth | — |
| 2021-08-27 | 548-358 | not yet reported which blocks → | Fibernetics Corporation | 464D | Chesley | — |
| 2021-08-27 | 548-359 | not yet reported which blocks → | Fibernetics Corporation | 464D | Feversham | — |
| 2021-08-27 | 548-360 | not yet reported which blocks → | Fibernetics Corporation | 464D | Flesherton | — |
| 2021-08-27 | 548-361 | not yet reported which blocks → | Fibernetics Corporation | 464D | Hanover | — |
| 2021-08-27 | 548-362 | not yet reported which blocks → | Fibernetics Corporation | 464D | Hepworth | — |
| 2021-08-27 | 548-363 | not yet reported which blocks → | Fibernetics Corporation | 464D | Markdale | — |
| 2021-08-27 | 548-364 | not yet reported which blocks → | Fibernetics Corporation | 464D | Meaford | — |
| 2021-08-27 | 548-365 | not yet reported which blocks → | Fibernetics Corporation | 464D | Sauble Beach | — |
| 2021-08-27 | 548-366 | not yet reported which blocks → | Fibernetics Corporation | 464D | Southampton | — |
| 2021-08-27 | 548-367 | not yet reported which blocks → | Fibernetics Corporation | 464D | Tara | — |
| 2021-08-27 | 548-368 | not yet reported which blocks → | Fibernetics Corporation | 464D | Thornbury | — |
| 2021-08-27 | 548-369 | not yet reported which blocks → | Fibernetics Corporation | 464D | Wiarton | — |
| 2021-08-26 | 548-273 | not yet reported which blocks → | Fibernetics Corporation | 464D | Delhi | — |
| 2021-08-26 | 548-274 | not yet reported which blocks → | Fibernetics Corporation | 464D | Jarvis | — |
| 2021-08-26 | 548-275 | not yet reported which blocks → | Fibernetics Corporation | 464D | Langton | — |
| 2021-08-26 | 548-276 | not yet reported which blocks → | Fibernetics Corporation | 464D | Port Dover | — |
| 2021-08-26 | 548-277 | not yet reported which blocks → | Fibernetics Corporation | 464D | Port Rowan | — |
| 2021-08-26 | 548-278 | not yet reported which blocks → | Fibernetics Corporation | 464D | Waterford | — |
| 2021-08-05 | 548-409 | not yet reported which blocks → | Iristel Inc. | 154E | Goderich | — |
| 2021-08-05 | 548-457 | not yet reported which blocks → | Iristel Inc. | 154E | Clinton | — |
| 2021-07-29 | 548-268 | not yet reported which blocks → | Fibernetics Corporation | 464D | Arthur | — |
| 2021-07-29 | 548-269 | not yet reported which blocks → | Fibernetics Corporation | 464D | Dundalk | — |
| 2021-07-29 | 548-270 | not yet reported which blocks → | Fibernetics Corporation | 464D | Grand Valley | — |
| 2021-07-29 | 548-271 | not yet reported which blocks → | Fibernetics Corporation | 464D | Holstein | — |
| 2021-07-29 | 548-272 | not yet reported which blocks → | Fibernetics Corporation | 464D | Mount Forest | — |
| 2021-07-19 | 548-331 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Simcoe | — |
| 2021-07-19 | 548-843 | not yet reported which blocks → | Brooke Telecom Co-operative Ltd. | 692G | Petrolia | — |
| 2021-07-15 | 548-845 | not yet reported which blocks → | Brooke Telecom Co-operative Ltd. | 692G | Wyoming | — |
| 2021-06-22 | 548-622 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Grand Valley | — |
| 2021-06-15 | 548-834 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Brigden | — |
| 2021-06-15 | 548-835 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Port Lambton | — |
| 2021-06-15 | 548-836 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Sombra | — |
| 2021-06-11 | 548-531 | not yet reported which blocks → | Fibernetics Corporation | 464D | Fingal | — |
| 2021-06-04 | 548-355 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Listowel | — |
| 2021-06-04 | 548-550 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Listowel | — |
| 2021-06-04 | 548-551 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Listowel | — |
| 2021-06-04 | 548-552 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Listowel | — |
| 2021-06-04 | 548-553 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Listowel | — |
| 2021-06-04 | 548-556 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Listowel | — |
| 2021-06-03 | 548-532 | not yet reported which blocks → | Fibernetics Corporation | 464D | Dutton | — |
| 2021-06-03 | 548-534 | not yet reported which blocks → | Fibernetics Corporation | 464D | Port Stanley | — |
| 2021-06-03 | 548-535 | not yet reported which blocks → | Fibernetics Corporation | 464D | Rodney | — |
| 2021-06-03 | 548-536 | not yet reported which blocks → | Fibernetics Corporation | 464D | Shedden | — |
| 2021-06-03 | 548-537 | not yet reported which blocks → | Fibernetics Corporation | 464D | Sparta | — |
| 2021-06-03 | 548-538 | not yet reported which blocks → | Fibernetics Corporation | 464D | St. Thomas | — |
| 2021-06-03 | 548-539 | not yet reported which blocks → | Fibernetics Corporation | 464D | West Lorne | — |
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.