NumberResearchRecent prefix assignments
0 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, all time — NPA 289
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
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Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2006-09-15 | 289-997 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Streetsville | — |
| 2006-09-05 | 289-562 | not yet reported which blocks → | Bell Canada | 8051 | Malton | — |
| 2006-08-25 | 289-268 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Woodbridge | — |
| 2006-08-25 | 289-825 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Clarkson | — |
| 2006-08-18 | 289-466 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Aurora | — |
| 2006-08-18 | 289-467 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | King City | — |
| 2006-08-18 | 289-468 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Maple | — |
| 2006-08-18 | 289-469 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Markham | — |
| 2006-08-18 | 289-470 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Newmarket | — |
| 2006-08-18 | 289-471 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Oak Ridges | — |
| 2006-08-18 | 289-472 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Thornhill | — |
| 2006-08-18 | 289-473 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Unionville | — |
| 2006-08-18 | 289-474 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Woodbridge | — |
| 2006-08-17 | 289-427 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Burlington | — |
| 2006-08-17 | 289-428 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Georgetown | — |
| 2006-08-17 | 289-429 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Milton | — |
| 2006-08-17 | 289-430 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Oakville | — |
| 2006-08-17 | 289-431 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Waterdown | — |
| 2006-08-17 | 289-445 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Ancaster | — |
| 2006-08-17 | 289-446 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Dundas | — |
| 2006-08-17 | 289-447 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Grimsby | — |
| 2006-08-17 | 289-448 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Stoney Creek | — |
| 2006-08-17 | 289-475 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Richmond Hill | — |
| 2006-08-15 | 289-426 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Hamilton | — |
| 2006-08-01 | 289-899 | not yet reported which blocks → | TELUS Mobility | 8303 | Beeton | — |
| 2006-07-27 | 289-297 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Port Credit | — |
| 2006-07-27 | 289-444 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Cooksville | — |
| 2006-07-27 | 289-548 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Malton | — |
| 2006-07-27 | 289-999 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Streetsville | — |
| 2006-07-26 | 289-299 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Clarkson | — |
| 2006-07-26 | 289-476 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Fort Erie | — |
| 2006-07-26 | 289-477 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Niagara Falls | — |
| 2006-07-26 | 289-478 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Port Colborne | — |
| 2006-07-26 | 289-480 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Welland | — |
| 2006-07-07 | 289-298 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Brampton | — |
| 2006-07-07 | 289-479 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St. Catharines-Thorold | — |
| 2006-06-27 | 289-369 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Dunnville | — |
| 2006-06-27 | 289-370 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Cayuga | — |
| 2006-06-21 | 289-303 | not yet reported which blocks → | Bell Mobility | 6574 | Fort Erie | — |
| 2006-06-20 | 289-881 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Oakville | — |
| 2006-06-19 | 289-636 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Burlington | — |
| 2006-06-16 | 289-385 | not yet reported which blocks → | Bell Mobility | 6574 | Oshawa | — |
| 2006-05-09 | 289-884 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Unionville | — |
| 2006-04-06 | 289-257 | not yet reported which blocks → | Bell Mobility | 6574 | Niagara Falls | — |
| 2006-03-22 | 289-747 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brampton | — |
| 2006-03-09 | 289-377 | not yet reported which blocks → | Bell Mobility | 6574 | Dunnville | — |
| 2006-02-23 | 289-244 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hamilton | — |
| 2006-02-22 | 289-202 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Kleinburg | — |
| 2006-02-09 | 289-344 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Georgetown | — |
| 2006-02-09 | 289-345 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Dundas | — |
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.