NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 905
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 |
|---|---|---|---|---|---|---|
| 2006-07-07 | 905-514 | not yet reported which blocks → | TELUS Mobility | 8303 | Milton | — |
| 2005-08-15 | 905-926 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| 2004-10-13 | 905-981 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2004-10-12 | 905-207 | not yet reported which blocks → | TELUS Mobility | 8303 | Cobourg | — |
| 2004-10-01 | 905-622 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| 2004-06-07 | 905-746 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2003-12-24 | 905-807 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2002-11-22 | 905-550 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| 2002-06-11 | 905-757 | not yet reported which blocks → | TELUS Mobility | 8303 | Caledon East | — |
| 2002-06-11 | 905-909 | not yet reported which blocks → | TELUS Mobility | 8303 | Beeton | — |
| 2002-04-16 | 905-246 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2001-10-02 | 905-818 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2001-08-02 | 905-999 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| 2000-10-04 | 905-801 | not yet reported which blocks → | TELUS Mobility | 8303 | Beeton | — |
| 2000-10-04 | 905-802 | not yet reported which blocks → | TELUS Mobility | 8303 | Burlington | — |
| 2000-10-04 | 905-805 | not yet reported which blocks → | TELUS Mobility | 8303 | Milton | — |
| 2000-10-04 | 905-806 | not yet reported which blocks → | TELUS Mobility | 8303 | Newmarket | — |
| 2000-10-04 | 905-808 | not yet reported which blocks → | TELUS Mobility | 8303 | Oakville | — |
| 2000-10-04 | 905-809 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| 2000-08-14 | 905-658 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2000-06-23 | 905-260 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| 2000-04-19 | 905-208 | not yet reported which blocks → | TELUS Mobility | 8303 | Oakville | — |
| 2000-04-06 | 905-588 | not yet reported which blocks → | TELUS Mobility | 8303 | Caledon East | — |
| 2000-01-24 | 905-580 | not yet reported which blocks → | TELUS Mobility | 8303 | Oakville | — |
| 1999-12-22 | 905-744 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| — | 905-259 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| — | 905-261 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| — | 905-269 | not yet reported which blocks → | TELUS Mobility | 8303 | Cobourg | — |
| — | 905-299 | not yet reported which blocks → | TELUS Mobility | 8303 | Milton | — |
| — | 905-329 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| — | 905-359 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| — | 905-380 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| — | 905-505 | not yet reported which blocks → | TELUS Mobility | 8303 | Oak Ridges | — |
| — | 905-506 | not yet reported which blocks → | TELUS Mobility | 8303 | Oak Ridges | — |
| — | 905-510 | not yet reported which blocks → | TELUS Mobility | 8303 | Oakville | — |
| — | 905-586 | not yet reported which blocks → | TELUS Mobility | 8303 | Caledon East | — |
| — | 905-621 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| — | 905-626 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| — | 905-630 | not yet reported which blocks → | TELUS Mobility | 8303 | Burlington | — |
| — | 905-638 | not yet reported which blocks → | TELUS Mobility | 8303 | Burlington | — |
| — | 905-651 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| — | 905-716 | not yet reported which blocks → | TELUS Mobility | 8303 | Newmarket | — |
| — | 905-730 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| — | 905-741 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| — | 905-745 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| — | 905-955 | not yet reported which blocks → | TELUS Mobility | 8303 | Newmarket | — |
| — | 905-961 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| — | 905-971 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.