NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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
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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 |
|---|---|---|---|---|---|---|
| 2009-12-31 | 289-991 | not yet reported which blocks → | Videotron Ltd. | 383F | Oshawa | — |
| 2009-12-31 | 289-992 | not yet reported which blocks → | Videotron Ltd. | 383F | Oshawa | — |
| 2009-11-20 | 289-553 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Maple | — |
| 2009-10-28 | 289-521 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Cooksville | — |
| 2009-10-16 | 289-597 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Thornhill | — |
| 2009-10-09 | 289-246 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Hamilton | — |
| 2009-10-05 | 289-432 | not yet reported which blocks → | Distributel | 082E | Beamsville | — |
| 2009-10-05 | 289-433 | not yet reported which blocks → | Distributel | 082E | Dunnville | — |
| 2009-10-05 | 289-434 | not yet reported which blocks → | Distributel | 082E | St. Catharines-Thorold | — |
| 2009-09-25 | 289-245 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Burlington | — |
| 2009-09-01 | 289-233 | not yet reported which blocks → | TELUS Mobility | 8303 | Brampton | — |
| 2009-09-01 | 289-255 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Ajax-Pickering | — |
| 2009-09-01 | 289-256 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Woodbridge | — |
| 2009-08-27 | 289-374 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Cooksville | — |
| 2009-07-31 | 289-879 | not yet reported which blocks → | TELUS Mobility | 8303 | Aurora | — |
| 2009-07-14 | 289-752 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brampton | — |
| 2009-07-08 | 289-335 | not yet reported which blocks → | Distributel | 082E | Hamilton | — |
| 2009-07-08 | 289-336 | not yet reported which blocks → | Distributel | 082E | Grimsby | — |
| 2009-06-22 | 289-269 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Richmond Hill | — |
| 2009-06-18 | 289-971 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Milton | — |
| 2009-06-17 | 289-928 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oshawa | — |
| 2009-06-17 | 289-929 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | St. Catharines-Thorold | — |
| 2009-06-09 | 289-922 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hamilton | — |
| 2009-06-09 | 289-937 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oakville | — |
| 2009-05-28 | 289-831 | not yet reported which blocks → | Fibernetics Corporation | 464D | Bradford | — |
| 2009-05-28 | 289-850 | not yet reported which blocks → | Fibernetics Corporation | 464D | Tottenham | — |
| 2009-05-21 | 289-400 | not yet reported which blocks → | Videotron Ltd. | 383F | Oakville | — |
| 2009-05-21 | 289-500 | not yet reported which blocks → | Videotron Ltd. | 383F | Newmarket | — |
| 2009-05-21 | 289-600 | not yet reported which blocks → | Videotron Ltd. | 383F | Oshawa | — |
| 2009-05-15 | 289-700 | not yet reported which blocks → | Videotron Ltd. | 383F | Hamilton | — |
| 2009-04-30 | 289-680 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2009-04-28 | 289-982 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Thornhill | — |
| 2009-04-16 | 289-481 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Oshawa | — |
| 2009-04-16 | 289-482 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Ajax-Pickering | — |
| 2009-04-16 | 289-483 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Whitby | — |
| 2009-04-16 | 289-484 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | South Pickering | — |
| 2009-03-20 | 289-248 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Niagara Falls | — |
| 2009-03-02 | 289-266 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Burlington | — |
| 2009-03-02 | 289-267 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | St. Catharines-Thorold | — |
| 2009-01-29 | 289-678 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Hamilton | — |
| 2009-01-29 | 289-789 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Unionville | — |
| 2009-01-26 | 289-987 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| 2009-01-23 | 289-687 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2009-01-07 | 289-921 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hamilton | — |
| 2008-12-10 | 289-324 | not yet reported which blocks → | Distributel | 082E | Castlemore | — |
| 2008-12-10 | 289-326 | not yet reported which blocks → | Distributel | 082E | Clarkson | — |
| 2008-12-10 | 289-327 | not yet reported which blocks → | Distributel | 082E | Cooksville | — |
| 2008-12-10 | 289-328 | not yet reported which blocks → | Distributel | 082E | Malton | — |
| 2008-12-10 | 289-329 | not yet reported which blocks → | Distributel | 082E | Port Credit | — |
| 2008-12-10 | 289-334 | not yet reported which blocks → | Distributel | 082E | Streetsville | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.