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 |
|---|---|---|---|---|---|---|
| — | 403-314 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| — | 403-315 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-317 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-318 | not yet reported which blocks → | TELUS Mobility | 8301 | Red Deer | — |
| — | 403-319 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-320 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-326 | not yet reported which blocks → | TELUS | 8084 | Cereal | — |
| — | 403-327 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-328 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-329 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-330 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-335 | not yet reported which blocks → | TELUS | 8084 | Didsbury | — |
| — | 403-337 | not yet reported which blocks → | TELUS | 8084 | Carstairs | — |
| — | 403-340 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| — | 403-341 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| — | 403-342 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| — | 403-343 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| — | 403-344 | not yet reported which blocks → | TELUS | 8084 | Coutts | — |
| — | 403-345 | not yet reported which blocks → | TELUS | 8084 | Coaldale | — |
| — | 403-346 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| — | 403-347 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| — | 403-350 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| — | 403-357 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| — | 403-362 | not yet reported which blocks → | TELUS | 8084 | Brooks | — |
| — | 403-364 | not yet reported which blocks → | TELUS | 8084 | Delia | — |
| — | 403-368 | not yet reported which blocks → | TELUS | 8084 | Rumsey | — |
| — | 403-370 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| — | 403-371 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| — | 403-377 | not yet reported which blocks → | TELUS | 8084 | Tilley | — |
| — | 403-378 | not yet reported which blocks → | TELUS | 8084 | Duchess | — |
| — | 403-379 | not yet reported which blocks → | TELUS | 8084 | Bindloss | — |
| — | 403-380 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-381 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-382 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-391 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| — | 403-394 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| — | 403-395 | not yet reported which blocks → | TELUS | 8084 | Cayley | — |
| — | 403-442 | not yet reported which blocks → | TELUS | 8084 | Trochu | — |
| — | 403-443 | not yet reported which blocks → | TELUS | 8084 | Three Hills | — |
| — | 403-485 | not yet reported which blocks → | TELUS | 8084 | Vulcan | — |
| — | 403-501 | not yet reported which blocks → | TELUS | 8084 | Brooks | — |
| — | 403-502 | not yet reported which blocks → | TELUS | 8084 | Medicine Hat | — |
| — | 403-503 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-504 | not yet reported which blocks → | TELUS | 8084 | Medicine Hat | — |
| — | 403-506 | not yet reported which blocks → | TELUS Mobility | 8301 | Red Deer | — |
| — | 403-507 | not yet reported which blocks → | TELUS | 8084 | Olds | — |
| — | 403-508 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-509 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-515 | not yet reported which blocks → | TELUS | 8084 | Calgary | — |
| — | 403-516 | 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.