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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2003-01-21 | 450-553 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Jerome | — |
| 2002-12-10 | 450-595 | not yet reported which blocks → | Videotron Ltd. | 8306 | Mirabel-Aeroport | — |
| 2001-07-12 | 450-960 | not yet reported which blocks → | Videotron Ltd. | 8306 | Joliette | — |
| 2001-05-18 | 450-726 | not yet reported which blocks → | Videotron Ltd. | 8306 | Bromont | — |
| 2001-01-10 | 450-574 | not yet reported which blocks → | Videotron Ltd. | 8306 | Granby | — |
| 2000-11-14 | 450-505 | not yet reported which blocks → | Videotron Ltd. | 8306 | Chomedey | — |
| 2000-02-25 | 450-550 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Lambert | — |
| 2000-02-25 | 450-552 | not yet reported which blocks → | Videotron Ltd. | 8306 | Boucherville | — |
| — | 450-508 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Therese | — |
| — | 450-515 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Jean | — |
| — | 450-575 | not yet reported which blocks → | Videotron Ltd. | 8306 | Pont-Viau | — |
| — | 450-616 | not yet reported which blocks → | Videotron Ltd. | 8306 | Longueuil | — |
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.