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 450
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 |
|---|---|---|---|---|---|---|
| 2007-03-22 | 450-409 | not yet reported which blocks → | Videotron Ltd. | 8306 | Lachute | — |
| 2007-03-20 | 450-422 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Victoire | — |
| 2007-03-15 | 450-401 | not yet reported which blocks → | Videotron Ltd. | 8306 | Contrecoeur | — |
| 2007-03-15 | 450-402 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Ours | — |
| 2006-11-14 | 450-762 | not yet reported which blocks → | TELUS Quebec | 2243 | Granby | — |
| 2006-09-18 | 450-955 | not yet reported which blocks → | Videotron Ltd. | 8306 | Cowansville | — |
| 2006-09-18 | 450-956 | not yet reported which blocks → | Videotron Ltd. | 8306 | Granby | — |
| 2006-09-13 | 450-919 | not yet reported which blocks → | Videotron Ltd. | 8306 | Bromont | — |
| 2006-09-07 | 450-238 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Chomedey | — |
| 2006-09-07 | 450-239 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Laval-Est | — |
| 2006-09-07 | 450-241 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Laval-Ouest | — |
| 2006-09-07 | 450-254 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Ste-Rose | — |
| 2006-09-07 | 450-255 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Vincent-de-Paul | — |
| 2006-09-07 | 450-323 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Eustache | — |
| 2006-09-07 | 450-324 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Ste-Julie-de-Vercheres | — |
| 2006-09-07 | 450-380 | not yet reported which blocks → | 9164-3122 Quebec inc | 843D | St-Simon | — |
| 2006-09-07 | 450-381 | not yet reported which blocks → | 9164-3122 Quebec inc | 843D | Ste-Helene-de-Bagot | — |
| 2006-09-07 | 450-383 | not yet reported which blocks → | 9164-3122 Quebec inc | 843D | St-Thomas-d'Aquin | — |
| 2006-09-07 | 450-385 | not yet reported which blocks → | 9164-3122 Quebec inc | 843D | St-Hyacinthe | — |
| 2006-09-06 | 450-262 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Beloeil | — |
| 2006-09-06 | 450-274 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Boucherville | — |
| 2006-09-06 | 450-279 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Chambly | — |
| 2006-09-06 | 450-282 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Laprairie | — |
| 2006-09-06 | 450-283 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Bruno | — |
| 2006-09-06 | 450-285 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Varennes | — |
| 2006-09-06 | 450-286 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Longueuil | — |
| 2006-09-06 | 450-289 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Beauharnois | — |
| 2006-09-06 | 450-290 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Constant | — |
| 2006-09-06 | 450-301 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Remi | — |
| 2006-09-06 | 450-306 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Cowansville | — |
| 2006-09-06 | 450-309 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Hudson | — |
| 2006-09-06 | 450-313 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Mascouche | — |
| 2006-09-06 | 450-316 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Coteau-du-Lac | — |
| 2006-09-06 | 450-317 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Les Cedres | — |
| 2006-09-06 | 450-318 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Rigaud | — |
| 2006-09-06 | 450-319 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Vaudreuil | — |
| 2006-09-05 | 450-256 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Pont-Viau | — |
| 2006-09-05 | 450-259 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Lambert | — |
| 2006-09-05 | 450-287 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Chateauguay | — |
| 2006-09-05 | 450-305 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Granby | — |
| 2006-09-05 | 450-312 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Terrebonne | — |
| 2006-09-05 | 450-322 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Valleyfield | — |
| 2006-09-05 | 450-503 | not yet reported which blocks → | TELUS Mobility | 8303 | Sorel | — |
| 2006-09-05 | 450-801 | not yet reported which blocks → | TELUS Mobility | 8303 | Valleyfield | — |
| 2006-09-05 | 450-947 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Cesaire | — |
| 2006-09-05 | 450-948 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Paul-D'Abbotsford | — |
| 2006-09-01 | 450-284 | not yet reported which blocks → | Videotron Ltd. | 8306 | Dunham | — |
| 2006-09-01 | 450-920 | not yet reported which blocks → | Videotron Ltd. | 8306 | Waterloo | — |
| 2006-08-09 | 450-710 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Jerome | — |
| 2006-08-04 | 450-350 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | St-Jean | — |
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.