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
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 |
|---|---|---|---|---|---|---|
| 2006-02-09 | 289-346 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Ancaster | — |
| 2006-02-09 | 289-347 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Welland | — |
| 2006-01-24 | 289-688 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| 2006-01-24 | 289-808 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2006-01-20 | 289-320 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Fort Erie | — |
| 2006-01-20 | 289-566 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Beamsville | — |
| 2006-01-20 | 289-836 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Port Colborne | — |
| 2006-01-20 | 289-868 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Niagara-On-The-Lake | — |
| 2006-01-20 | 289-876 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Ridgeway | — |
| 2006-01-20 | 289-897 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Pelham | — |
| 2006-01-18 | 289-440 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2006-01-17 | 289-264 | not yet reported which blocks → | Bell Mobility | 6574 | Newmarket | — |
| 2006-01-11 | 289-333 | not yet reported which blocks → | Bell Canada | 8051 | Unionville | — |
| 2005-12-22 | 289-235 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Grimsby | — |
| 2005-12-16 | 289-238 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Dundas | — |
| 2005-12-16 | 289-239 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Ancaster | — |
| 2005-12-16 | 289-296 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Niagara Falls | — |
| 2005-12-16 | 289-820 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Welland | — |
| 2005-12-13 | 289-878 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Milton | — |
| 2005-12-06 | 289-895 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Waterdown | — |
| 2005-12-05 | 289-891 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Georgetown | — |
| 2005-11-28 | 289-764 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Brampton | — |
| 2005-10-25 | 289-407 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | St. Catharines-Thorold | — |
| 2005-10-21 | 289-228 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2005-10-18 | 289-293 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Burlington | — |
| 2005-10-14 | 289-294 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Niagara Falls | — |
| 2005-10-14 | 289-295 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Oakville | — |
| 2005-10-14 | 289-404 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oshawa | — |
| 2005-10-12 | 289-288 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Burlington | — |
| 2005-10-12 | 289-291 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Oakville | — |
| 2005-10-12 | 289-292 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Niagara Falls | — |
| 2005-04-26 | 289-290 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Streetsville | — |
| 2005-03-14 | 289-280 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Mount Hope | — |
| 2005-03-14 | 289-281 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Mount Hope | — |
| 2005-03-14 | 289-282 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Hagersville | — |
| 2005-03-14 | 289-283 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Hagersville | — |
| 2005-03-14 | 289-284 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Caledonia | — |
| 2005-03-14 | 289-285 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Caledonia | — |
| 2005-03-14 | 289-286 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Binbrook | — |
| 2005-03-14 | 289-287 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Binbrook | — |
| 2004-03-24 | 289-833 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Richmond Hill | — |
| 2004-03-24 | 289-892 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Ajax-Pickering | — |
| 2004-03-19 | 289-623 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Malton | — |
| 2004-03-19 | 289-822 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Port Credit | — |
| 2004-03-19 | 289-882 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | South Pickering | — |
| 2004-03-19 | 289-883 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Cooksville | — |
| 2004-03-19 | 289-893 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Whitby | — |
| 2004-03-19 | 289-896 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Streetsville | — |
| 2004-03-18 | 289-828 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Burlington | — |
| 2004-03-18 | 289-898 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Clarkson | — |
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.