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 |
|---|---|---|---|---|---|---|
| 2007-03-14 | 403-494 | not yet reported which blocks → | Bell Mobility | 6574 | Drumheller | — |
| 2007-03-14 | 403-495 | not yet reported which blocks → | Bell Mobility | 6574 | Hanna | — |
| 2007-03-14 | 403-496 | not yet reported which blocks → | Bell Mobility | 6574 | Vulcan | — |
| 2007-03-14 | 403-497 | not yet reported which blocks → | Bell Mobility | 6574 | Banff | — |
| 2007-03-14 | 403-913 | not yet reported which blocks → | Bell Mobility | 6574 | Ponoka | — |
| 2007-03-14 | 403-916 | not yet reported which blocks → | Bell Mobility | 6574 | Stettler | — |
| 2007-01-26 | 403-550 | not yet reported which blocks → | Bell Mobility | 6574 | Red Deer | — |
| 2007-01-11 | 403-454 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2006-12-19 | 403-593 | not yet reported which blocks → | Bell Mobility | 6574 | Lethbridge | — |
| 2006-12-19 | 403-594 | not yet reported which blocks → | Bell Mobility | 6574 | Medicine Hat | — |
| 2006-12-19 | 403-596 | not yet reported which blocks → | Bell Mobility | 6574 | Red Deer | — |
| 2006-11-29 | 403-400 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Calgary | — |
| 2006-11-27 | 403-744 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Calgary | — |
| 2006-10-16 | 403-523 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2006-10-16 | 403-718 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2006-10-13 | 403-724 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2006-10-13 | 403-902 | not yet reported which blocks → | TELUS | 8084 | Strathmore | — |
| 2006-10-11 | 403-973 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| 2006-10-04 | 403-975 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| 2006-09-29 | 403-483 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2006-09-29 | 403-984 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2006-09-27 | 403-458 | not yet reported which blocks → | Bell Mobility | 6574 | Medicine Hat | — |
| 2006-09-27 | 403-481 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2006-09-05 | 403-707 | not yet reported which blocks → | Bell Mobility | 6574 | Canmore | — |
| 2006-09-01 | 403-477 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2006-08-25 | 403-498 | not yet reported which blocks → | Bell Mobility | 6574 | High River | — |
| 2006-08-25 | 403-499 | not yet reported which blocks → | Bell Mobility | 6574 | Strathmore | — |
| 2006-07-26 | 403-385 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2006-07-20 | 403-324 | not yet reported which blocks → | TELUS Mobility | 8301 | Strathmore | — |
| 2006-07-12 | 403-384 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2006-06-29 | 403-675 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Canmore | — |
| 2006-06-21 | 403-479 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2006-06-07 | 403-475 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2006-06-07 | 403-476 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2006-06-05 | 403-649 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | High River | — |
| 2006-06-05 | 403-980 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Airdrie | — |
| 2006-06-05 | 403-981 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Cochrane | — |
| 2006-06-05 | 403-982 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Okotoks | — |
| 2006-06-05 | 403-983 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Strathmore | — |
| 2006-05-31 | 403-535 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2006-05-26 | 403-799 | not yet reported which blocks → | Globalstar | 6996 | Calgary | — |
| 2006-05-11 | 403-736 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2006-05-11 | 403-743 | not yet reported which blocks → | TELUS | 8084 | Stettler | — |
| 2006-05-02 | 403-993 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2006-04-25 | 403-450 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Calgary | — |
| 2006-03-22 | 403-376 | not yet reported which blocks → | TELUS Mobility | 8301 | Brooks | — |
| 2006-03-08 | 403-513 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| 2006-03-08 | 403-794 | not yet reported which blocks → | TELUS | 8084 | Brooks | — |
| 2006-03-06 | 403-436 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Drumheller | — |
| 2006-03-06 | 403-439 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Didsbury | — |
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.