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
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May 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2012-10-29 | 450-486 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Lambert | — |
| 2012-10-29 | 450-490 | not yet reported which blocks → | Videotron Ltd. | 8306 | Pont-Viau | — |
| 2012-10-29 | 450-527 | not yet reported which blocks → | Videotron Ltd. | 8306 | Beloeil | — |
| 2012-05-25 | 450-636 | not yet reported which blocks → | Videotron Ltd. | 8306 | Hemmingford | — |
| 2012-05-25 | 450-637 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Chrysostome | — |
| 2012-05-25 | 450-843 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ormstown | — |
| 2012-05-25 | 450-957 | not yet reported which blocks → | Videotron Ltd. | 8306 | Huntingdon | — |
| 2010-11-05 | 450-507 | not yet reported which blocks → | Videotron Ltd. | 8306 | Chateauguay | — |
| 2010-11-05 | 450-509 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Constant | — |
| 2010-09-20 | 450-394 | not yet reported which blocks → | Videotron Ltd. | 8306 | Joliette | — |
| 2010-08-26 | 450-983 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Eustache | — |
| 2010-07-22 | 450-376 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Jean | — |
| 2010-07-20 | 450-556 | not yet reported which blocks → | Videotron Ltd. | 8306 | Sorel | — |
| 2010-07-20 | 450-994 | not yet reported which blocks → | Videotron Ltd. | 8306 | Granby | — |
| 2010-07-15 | 450-824 | not yet reported which blocks → | Videotron Ltd. | 8306 | Terrebonne | — |
| 2010-07-15 | 450-918 | not yet reported which blocks → | Videotron Ltd. | 8306 | Mascouche | — |
| 2010-06-16 | 450-704 | not yet reported which blocks → | Videotron Ltd. | 8306 | Le Gardeur | — |
| 2010-06-16 | 450-705 | not yet reported which blocks → | Videotron Ltd. | 8306 | L'Epiphanie-l'Assomption | — |
| 2010-05-12 | 450-504 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Jerome | — |
| 2010-03-19 | 450-941 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Anne-des-Plaines | — |
| 2010-03-19 | 450-951 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Therese | — |
| 2010-03-18 | 450-685 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Julie-de-Vercheres | — |
| 2010-03-18 | 450-690 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Bruno | — |
| 2010-03-12 | 450-339 | not yet reported which blocks → | Videotron Ltd. | 8306 | Beloeil | — |
| 2010-03-12 | 450-356 | not yet reported which blocks → | Videotron Ltd. | 8306 | Boucherville | — |
| 2010-03-12 | 450-695 | not yet reported which blocks → | Videotron Ltd. | 8306 | Laprairie | — |
| 2010-03-12 | 450-890 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Lambert | — |
| 2010-03-11 | 450-396 | not yet reported which blocks → | Videotron Ltd. | 8306 | Longueuil | — |
| 2010-03-11 | 450-593 | not yet reported which blocks → | Videotron Ltd. | 8306 | Chambly | — |
| 2009-04-27 | 450-331 | not yet reported which blocks → | Videotron Ltd. | 328F | Lachute | — |
| 2009-03-18 | 450-626 | not yet reported which blocks → | Videotron Ltd. | 328F | Longueuil | — |
| 2009-03-03 | 450-846 | not yet reported which blocks → | Videotron Ltd. | 328F | Sorel | — |
| 2009-03-03 | 450-847 | not yet reported which blocks → | Videotron Ltd. | 328F | St-Hyacinthe | — |
| 2009-03-03 | 450-848 | not yet reported which blocks → | Videotron Ltd. | 328F | St-Jerome | — |
| 2009-03-02 | 450-630 | not yet reported which blocks → | Videotron Ltd. | 328F | St-Sauveur | — |
| 2009-03-02 | 450-631 | not yet reported which blocks → | Videotron Ltd. | 328F | Valleyfield | — |
| 2009-02-25 | 450-558 | not yet reported which blocks → | Videotron Ltd. | 328F | Granby | — |
| 2009-02-25 | 450-559 | not yet reported which blocks → | Videotron Ltd. | 328F | Joliette | — |
| 2009-02-25 | 450-684 | not yet reported which blocks → | Videotron Ltd. | 328F | St-Jean | — |
| 2008-06-26 | 450-855 | not yet reported which blocks → | Videotron Ltd. | 8306 | Sorel | — |
| 2008-06-06 | 450-741 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Jean | — |
| 2008-05-22 | 450-598 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Eustache | — |
| 2008-05-14 | 450-416 | not yet reported which blocks → | Videotron Ltd. | 8306 | Terrebonne | — |
| 2008-05-14 | 450-417 | not yet reported which blocks → | Videotron Ltd. | 8306 | Mascouche | — |
| 2008-04-04 | 450-867 | not yet reported which blocks → | Videotron Ltd. | 8306 | Joliette | — |
| 2008-03-20 | 450-844 | not yet reported which blocks → | Videotron Ltd. | 8306 | Chateauguay | — |
| 2008-03-20 | 450-845 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Constant | — |
| 2008-03-12 | 450-932 | not yet reported which blocks → | Videotron Ltd. | 8306 | Le Gardeur | — |
| 2008-03-12 | 450-938 | not yet reported which blocks → | Videotron Ltd. | 8306 | L'Epiphanie-l'Assomption | — |
| 2008-02-29 | 450-991 | not yet reported which blocks → | Videotron Ltd. | 8306 | Granby | — |
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.