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 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 |
|---|---|---|---|---|---|---|
| 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 | — |
| 2004-06-14 | 403-525 | not yet reported which blocks → | TELUS | 8084 | Medicine Hat | — |
| 2004-04-22 | 403-356 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| 2004-04-22 | 403-359 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| 2004-03-29 | 403-847 | not yet reported which blocks → | TELUS | 8084 | Rocky Mountain House | — |
| 2004-02-18 | 403-554 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2003-11-07 | 403-576 | not yet reported which blocks → | TELUS | 8084 | Veteran | — |
| 2003-10-29 | 403-968 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2003-10-23 | 403-361 | not yet reported which blocks → | TELUS | 8084 | Strathmore | — |
| 2003-10-23 | 403-636 | not yet reported which blocks → | TELUS | 8084 | Sundre | — |
| 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 | — |
| 2003-05-22 | 403-445 | not yet reported which blocks → | TELUS | 8084 | Three Hills | — |
| 2003-05-22 | 403-486 | not yet reported which blocks → | TELUS | 8084 | Vulcan | — |
| 2003-04-16 | 403-332 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| 2003-04-16 | 403-945 | not yet reported which blocks → | TELUS | 8084 | Airdrie | — |
| 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 | — |
| 2002-03-15 | 403-645 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2001-12-04 | 403-785 | not yet reported which blocks → | TELUS | 8084 | Ponoka | — |
| 2001-11-07 | 403-880 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2001-11-05 | 403-944 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2001-10-11 | 403-375 | not yet reported which blocks → | TELUS | 8084 | 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 | — |
| 2001-09-19 | 403-821 | not yet reported which blocks → | TELUS | 8084 | Drumheller | — |
| 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 | 403-352 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| 2001-07-19 | 403-396 | not yet reported which blocks → | TELUS Mobility | 8301 | Red Deer | — |
| 2001-07-18 | 403-559 | not yet reported which blocks → | TELUS | 8084 | Olds | — |
| 2001-07-17 | 403-682 | not yet reported which blocks → | TELUS | 8084 | Claresholm | — |
| 2001-07-17 | 403-857 | not yet reported which blocks → | TELUS | 8084 | Hanna | — |
| 2001-06-08 | 403-532 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2001-06-08 | 403-603 | not yet reported which blocks → | TELUS | 8084 | High River | — |
| 2001-05-17 | 403-679 | not yet reported which blocks → | TELUS | 8084 | Canmore | — |
| 2001-05-07 | 403-741 | not yet reported which blocks → | TELUS | 8084 | Stettler | — |
| 2001-04-26 | 403-386 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2001-04-23 | 403-338 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
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.