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 |
|---|---|---|---|---|---|---|
| 2021-06-02 | 548-254 | not yet reported which blocks → | Wightman Communications Ltd. | 138D | Durham | — |
| 2021-05-26 | 548-336 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Mount Forest | — |
| 2021-05-26 | 548-337 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Mount Forest | — |
| 2021-05-26 | 548-339 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Mount Forest | — |
| 2021-05-26 | 548-533 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Mount Forest | — |
| 2021-05-26 | 548-633 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Mount Forest | — |
| 2021-05-26 | 548-733 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Mount Forest | — |
| 2021-05-25 | 548-322 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Drumbo | — |
| 2021-05-25 | 548-330 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Ilderton | — |
| 2021-05-25 | 548-335 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Mount Forest | — |
| 2021-05-07 | 548-253 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | La Salle | — |
| 2021-05-07 | 548-659 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Crediton | — |
| 2021-05-06 | 548-252 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Emeryville | — |
| 2021-04-28 | 548-299 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Comber | — |
| 2021-04-28 | 548-399 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Emeryville | — |
| 2021-04-28 | 548-499 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Woodslee | — |
| 2021-04-28 | 548-599 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Wheatley | — |
| 2021-04-28 | 548-699 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Pleasant Park | — |
| 2021-04-28 | 548-799 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Pelee Island | — |
| 2021-04-28 | 548-884 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Maidstone | — |
| 2021-04-14 | 548-408 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Guelph | — |
| 2021-04-12 | 548-285 | not yet reported which blocks → | Quadro Communications Co-operative Inc. | 004G | Thamesford | — |
| 2021-04-05 | 548-808 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Guelph | — |
| 2021-03-02 | 548-826 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Rockwood | — |
| 2021-02-25 | 548-328 | not yet reported which blocks → | Bell Mobility | 6574 | Brantford | — |
| 2021-02-22 | 548-825 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Acton | — |
| 2021-02-22 | 548-879 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Caledon | — |
| 2021-02-22 | 548-892 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Blenheim | — |
| 2021-02-22 | 548-893 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Tilbury | — |
| 2021-02-18 | 548-251 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Wyoming | — |
| 2021-02-18 | 548-857 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Kingsville | — |
| 2021-02-18 | 548-858 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Exeter | — |
| 2021-02-18 | 548-859 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Strathroy | — |
| 2021-02-17 | 548-250 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Corunna | — |
| 2021-01-20 | 548-200 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Belle River | — |
| 2021-01-20 | 548-300 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Stoney Point | — |
| 2021-01-20 | 548-400 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Essex | — |
| 2021-01-20 | 548-448 | not yet reported which blocks → | IXICA Communications Inc. | 812H | McGregor | — |
| 2021-01-20 | 548-500 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Kingsville | — |
| 2021-01-20 | 548-600 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Harrow | — |
| 2021-01-20 | 548-666 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Tecumseh | — |
| 2021-01-20 | 548-700 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Leamington | — |
| 2021-01-19 | 548-444 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Amherstburg | — |
| 2021-01-06 | 548-257 | not yet reported which blocks → | Fibernetics Corporation | 464D | Comber | — |
| 2021-01-06 | 548-258 | not yet reported which blocks → | Fibernetics Corporation | 464D | Stoney Point | — |
| 2021-01-06 | 548-259 | not yet reported which blocks → | Fibernetics Corporation | 464D | Woodslee | — |
| 2021-01-06 | 548-260 | not yet reported which blocks → | Fibernetics Corporation | 464D | Emeryville | — |
| 2021-01-06 | 548-261 | not yet reported which blocks → | Fibernetics Corporation | 464D | Pleasant Park | — |
| 2021-01-06 | 548-262 | not yet reported which blocks → | Fibernetics Corporation | 464D | Harrow | — |
| 2021-01-06 | 548-263 | not yet reported which blocks → | Fibernetics Corporation | 464D | La Salle | — |
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.