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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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2008-02-21 | 450-592 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Jerome | — |
| 2008-02-20 | 450-707 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Anne-des-Plaines | — |
| 2008-02-20 | 450-818 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Therese | — |
| 2008-02-12 | 450-338 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Julie-de-Vercheres | — |
| 2008-02-12 | 450-403 | not yet reported which blocks → | Videotron Ltd. | 8306 | Chambly | — |
| 2008-02-12 | 450-482 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Bruno | — |
| 2008-02-12 | 450-813 | not yet reported which blocks → | Videotron Ltd. | 8306 | Beloeil | — |
| 2008-02-12 | 450-906 | not yet reported which blocks → | Videotron Ltd. | 8306 | Boucherville | — |
| 2008-02-06 | 450-332 | not yet reported which blocks → | Videotron Ltd. | 8306 | Longueuil | — |
| 2008-02-06 | 450-812 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Lambert | — |
| 2008-02-06 | 450-907 | not yet reported which blocks → | Videotron Ltd. | 8306 | Laprairie | — |
| 2007-09-06 | 450-483 | not yet reported which blocks → | Videotron Ltd. | 8306 | Yamaska | — |
| 2007-08-14 | 450-334 | not yet reported which blocks → | Videotron Ltd. | 8306 | Notre-Dame-de-Stanbridge | — |
| 2007-06-11 | 450-599 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Pie | — |
| 2007-06-11 | 450-998 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Hyacinthe | — |
| 2007-04-03 | 450-528 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Andre Est | — |
| 2007-03-22 | 450-335 | not yet reported which blocks → | Videotron Ltd. | 8306 | Shawbridge | — |
| 2007-03-22 | 450-336 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Sauveur | — |
| 2007-03-22 | 450-407 | not yet reported which blocks → | Videotron Ltd. | 8306 | Brownsburg | — |
| 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 | — |
| 2006-09-18 | 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 | — |
| 2006-09-05 | 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 | — |
| 2006-08-02 | 450-399 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Julienne | — |
| 2006-07-28 | 450-397 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Jacques | — |
| 2006-07-28 | 450-398 | not yet reported which blocks → | Videotron Ltd. | 8306 | Joliette | — |
| 2006-07-20 | 450-412 | not yet reported which blocks → | Videotron Ltd. | 8306 | Mirabel-Ste-Scholastique | — |
| 2006-07-18 | 450-414 | not yet reported which blocks → | Videotron Ltd. | 8306 | Mirabel-St-Augustin | — |
| 2006-07-12 | 450-413 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Eustache | — |
| 2006-07-12 | 450-415 | not yet reported which blocks → | Videotron Ltd. | 8306 | Oka | — |
| 2006-07-11 | 450-302 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Lin | — |
| 2006-07-11 | 450-303 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Calixte-de-Kilkenny | — |
| 2006-07-11 | 450-304 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Jerome | — |
| 2006-07-07 | 450-939 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Therese | — |
| 2006-07-07 | 450-940 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Anne-des-Plaines | — |
| 2006-06-30 | 450-933 | not yet reported which blocks → | Videotron Ltd. | 8306 | Pont-Viau | — |
| 2006-06-30 | 450-934 | not yet reported which blocks → | Videotron Ltd. | 8306 | Chomedey | — |
| 2006-06-29 | 450-314 | not yet reported which blocks → | Videotron Ltd. | 8306 | Laval-Ouest | — |
| 2006-06-29 | 450-315 | not yet reported which blocks → | Videotron Ltd. | 8306 | Laval-Est | — |
| 2006-06-29 | 450-936 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Vincent-de-Paul | — |
| 2006-06-29 | 450-937 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Rose | — |
| 2006-06-27 | 450-333 | not yet reported which blocks → | Videotron Ltd. | 8306 | Rawdon | — |
| 2006-06-27 | 450-591 | not yet reported which blocks → | Videotron Ltd. | 8306 | L'Epiphanie-l'Assomption | — |
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.