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 403
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 |
|---|---|---|---|---|---|---|
| 2008-03-07 | 403-700 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2008-01-21 | 403-715 | not yet reported which blocks → | TELUS Mobility | 8301 | Lethbridge | — |
| 2007-07-03 | 403-895 | not yet reported which blocks → | TELUS Mobility | 8301 | Rocky Mountain House | — |
| 2007-06-21 | 403-623 | not yet reported which blocks → | TELUS Mobility | 8301 | Crowsnest Pass | — |
| 2007-06-21 | 403-624 | not yet reported which blocks → | TELUS Mobility | 8301 | Pincher Creek | — |
| 2007-06-18 | 403-489 | not yet reported which blocks → | TELUS Mobility | 8301 | Claresholm | — |
| 2007-06-18 | 403-490 | not yet reported which blocks → | TELUS Mobility | 8301 | Claresholm | — |
| 2007-06-18 | 403-491 | not yet reported which blocks → | TELUS Mobility | 8301 | Milk River | — |
| 2007-06-18 | 403-492 | not yet reported which blocks → | TELUS Mobility | 8301 | Milk River | — |
| 2007-06-18 | 403-622 | not yet reported which blocks → | TELUS Mobility | 8301 | Vauxhall | — |
| 2007-05-25 | 403-853 | not yet reported which blocks → | TELUS Mobility | 8301 | Veteran | — |
| 2007-05-24 | 403-963 | not yet reported which blocks → | TELUS Mobility | 8301 | Ponoka | — |
| 2007-05-11 | 403-200 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2007-05-11 | 403-305 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2006-07-20 | 403-324 | not yet reported which blocks → | TELUS Mobility | 8301 | Strathmore | — |
| 2006-05-02 | 403-993 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2006-03-22 | 403-376 | not yet reported which blocks → | TELUS Mobility | 8301 | Brooks | — |
| 2006-01-24 | 403-869 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2005-12-12 | 403-586 | not yet reported which blocks → | TELUS Mobility | 8301 | Olds | — |
| 2005-10-21 | 403-896 | not yet reported which blocks → | TELUS Mobility | 8301 | Red Deer | — |
| 2004-11-04 | 403-373 | not yet reported which blocks → | TELUS Mobility | 8301 | Red Deer | — |
| 2004-07-13 | 403-369 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2004-06-30 | 403-635 | not yet reported which blocks → | TELUS Mobility | 8301 | Lethbridge | — |
| 2004-02-18 | 403-554 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2003-10-29 | 403-968 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2003-09-25 | 403-969 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2003-09-23 | 403-505 | not yet reported which blocks → | TELUS Mobility | 8301 | Red Deer | — |
| 2003-09-04 | 403-866 | not yet reported which blocks → | TELUS Mobility | 8301 | Medicine Hat | — |
| 2003-09-04 | 403-894 | not yet reported which blocks → | TELUS Mobility | 8301 | Lethbridge | — |
| 2003-04-07 | 403-334 | not yet reported which blocks → | TELUS Mobility | 8301 | Drumheller | — |
| 2003-04-07 | 403-336 | not yet reported which blocks → | TELUS Mobility | 8301 | High River | — |
| 2003-04-03 | 403-339 | not yet reported which blocks → | TELUS Mobility | 8301 | Pincher Creek | — |
| 2003-04-03 | 403-493 | not yet reported which blocks → | TELUS Mobility | 8301 | Canmore | — |
| 2003-04-03 | 403-583 | not yet reported which blocks → | TELUS Mobility | 8301 | Crowsnest Pass | — |
| 2003-03-19 | 403-325 | not yet reported which blocks → | TELUS Mobility | 8301 | Strathmore | — |
| 2002-10-01 | 403-771 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2002-10-01 | 403-990 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2002-09-30 | 403-998 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2002-07-29 | 403-899 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2001-11-07 | 403-880 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2001-10-02 | 403-801 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2001-10-02 | 403-826 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2001-08-07 | 403-988 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2001-08-02 | 403-333 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2001-07-19 | 403-396 | not yet reported which blocks → | TELUS Mobility | 8301 | Red Deer | — |
| 2001-01-31 | 403-669 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2001-01-23 | 403-710 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2001-01-15 | 403-808 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2001-01-08 | 403-828 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2000-10-24 | 403-888 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
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.