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 |
|---|---|---|---|---|---|---|
| — | 403-577 | not yet reported which blocks → | TELUS | 8084 | Consort | — |
| — | 403-578 | not yet reported which blocks → | TELUS | 8084 | Coronation | — |
| — | 403-579 | not yet reported which blocks → | TELUS | 8084 | Byemoor | — |
| — | 403-580 | not yet reported which blocks → | TELUS | 8084 | Medicine Hat | — |
| — | 403-588 | not yet reported which blocks → | TELUS Mobility | 8301 | Red Deer | — |
| — | 403-589 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| — | 403-590 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-591 | not yet reported which blocks → | TELUS | 8084 | Kananaskis | — |
| — | 403-599 | not yet reported which blocks → | TELUS | 8084 | Milo | — |
| — | 403-601 | not yet reported which blocks → | TELUS | 8084 | High River | — |
| — | 403-602 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | High River | — |
| — | 403-605 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| — | 403-606 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| — | 403-607 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| — | 403-609 | not yet reported which blocks → | TELUS | 8084 | Canmore | — |
| — | 403-612 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| — | 403-613 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| — | 403-615 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| — | 403-616 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| — | 403-617 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| — | 403-620 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| — | 403-625 | not yet reported which blocks → | TELUS | 8084 | Claresholm | — |
| — | 403-626 | not yet reported which blocks → | TELUS | 8084 | Glenwood | — |
| — | 403-627 | not yet reported which blocks → | TELUS | 8084 | Pincher Creek | — |
| — | 403-628 | not yet reported which blocks → | TELUS | 8084 | Cowley | — |
| — | 403-630 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| — | 403-631 | not yet reported which blocks → | TELUS | 8084 | Torrington | — |
| — | 403-633 | not yet reported which blocks → | TELUS Mobility | 8301 | Brooks | — |
| — | 403-634 | not yet reported which blocks → | TELUS Mobility | 8301 | Lethbridge | — |
| — | 403-637 | not yet reported which blocks → | TELUS | 8084 | Cremona | — |
| — | 403-638 | not yet reported which blocks → | TELUS | 8084 | Sundre | — |
| — | 403-640 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-641 | not yet reported which blocks → | TELUS | 8084 | Bassano | — |
| — | 403-642 | not yet reported which blocks → | TELUS | 8084 | Warner | — |
| — | 403-643 | not yet reported which blocks → | TELUS | 8084 | Carmangay | — |
| — | 403-644 | not yet reported which blocks → | TELUS | 8084 | Standard | — |
| — | 403-646 | not yet reported which blocks → | TELUS | 8084 | Nanton | — |
| — | 403-647 | not yet reported which blocks → | TELUS | 8084 | Milk River | — |
| — | 403-650 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| — | 403-651 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| — | 403-652 | not yet reported which blocks → | TELUS | 8084 | High River | — |
| — | 403-653 | not yet reported which blocks → | TELUS | 8084 | Cardston | — |
| — | 403-654 | not yet reported which blocks → | TELUS | 8084 | Vauxhall | — |
| — | 403-655 | not yet reported which blocks → | TELUS | 8084 | Grassy Lake | — |
| — | 403-660 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| — | 403-661 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-664 | not yet reported which blocks → | TELUS | 8084 | Oyen | — |
| — | 403-665 | not yet reported which blocks → | TELUS | 8084 | Craigmyle | — |
| — | 403-666 | not yet reported which blocks → | TELUS | 8084 | Etzikom | — |
| — | 403-670 | 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.