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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2011-07-25 | 450-421 | not yet reported which blocks → | TELUS Mobility | 8303 | Joliette | — |
| 2010-06-04 | 450-365 | not yet reported which blocks → | TELUS Mobility | 8303 | Joliette | — |
| 2009-05-04 | 450-320 | not yet reported which blocks → | TELUS Mobility | 8303 | Granby | — |
| 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 | — |
| 2006-07-19 | 450-276 | not yet reported which blocks → | TELUS Mobility | 8303 | Ste-Therese | — |
| 2006-07-19 | 450-277 | not yet reported which blocks → | TELUS Mobility | 8303 | Beauharnois | — |
| 2006-06-23 | 450-272 | not yet reported which blocks → | TELUS Mobility | 8303 | St-Jean | — |
| 2006-04-04 | 450-271 | not yet reported which blocks → | TELUS Mobility | 8303 | Joliette | — |
| 2005-08-23 | 450-808 | not yet reported which blocks → | TELUS Mobility | 8303 | Sorel | — |
| 2004-03-30 | 450-898 | not yet reported which blocks → | TELUS Mobility | 8303 | Joliette | — |
| 2004-03-18 | 450-203 | not yet reported which blocks → | TELUS Mobility | 8303 | Bedford | — |
| 2002-02-26 | 450-204 | not yet reported which blocks → | TELUS Mobility | 8303 | Granby | — |
| 2002-02-21 | 450-612 | not yet reported which blocks → | TELUS Mobility | 8303 | Lachute | — |
| 2002-02-21 | 450-613 | not yet reported which blocks → | TELUS Mobility | 8303 | Lachute | — |
| 2001-03-08 | 450-270 | not yet reported which blocks → | TELUS Mobility | 8303 | Beauharnois | — |
| 2001-03-08 | 450-540 | not yet reported which blocks → | TELUS Mobility | 8303 | Lavaltrie | — |
| 2001-03-08 | 450-702 | not yet reported which blocks → | TELUS Mobility | 8303 | Ste-Madeleine | — |
| 2001-01-24 | 450-806 | not yet reported which blocks → | TELUS Mobility | 8303 | Ste-Therese | — |
| 2001-01-24 | 450-807 | not yet reported which blocks → | TELUS Mobility | 8303 | Valleyfield | — |
| 2001-01-16 | 450-501 | not yet reported which blocks → | TELUS Mobility | 8303 | St-Hyacinthe | — |
| 2001-01-16 | 450-502 | not yet reported which blocks → | TELUS Mobility | 8303 | St-Hyacinthe | — |
| 2001-01-16 | 450-821 | not yet reported which blocks → | TELUS Mobility | 8303 | St-Jerome | — |
| 2001-01-16 | 450-822 | not yet reported which blocks → | TELUS Mobility | 8303 | St-Jerome | — |
| 2000-12-21 | 450-820 | not yet reported which blocks → | TELUS Mobility | 8303 | St-Jerome | — |
| 2000-10-19 | 450-880 | not yet reported which blocks → | TELUS Mobility | 8303 | Sorel | — |
| 2000-10-19 | 450-881 | not yet reported which blocks → | TELUS Mobility | 8303 | Sorel | — |
| 2000-09-07 | 450-803 | not yet reported which blocks → | TELUS Mobility | 8303 | Joliette | — |
| 2000-07-27 | 450-802 | not yet reported which blocks → | TELUS Mobility | 8303 | Valleyfield | — |
| 2000-04-19 | 450-278 | not yet reported which blocks → | TELUS Mobility | 8303 | St-Hyacinthe | — |
| 2000-02-10 | 450-830 | not yet reported which blocks → | TELUS Mobility | 8303 | Granby | — |
| 2000-02-08 | 450-368 | not yet reported which blocks → | TELUS Mobility | 8303 | Lavaltrie | — |
| — | 450-268 | not yet reported which blocks → | TELUS Mobility | 8303 | Beauharnois | — |
| — | 450-541 | not yet reported which blocks → | TELUS Mobility | 8303 | Lavaltrie | — |
| — | 450-543 | not yet reported which blocks → | TELUS Mobility | 8303 | Ste-Therese | — |
| — | 450-701 | not yet reported which blocks → | TELUS Mobility | 8303 | Ste-Madeleine | — |
| — | 450-706 | not yet reported which blocks → | TELUS Mobility | 8303 | St-Pie-de-Guire | — |
| — | 450-775 | not yet reported which blocks → | TELUS Mobility | 8303 | 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.