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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2008-09-23 | 403-956 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2007-07-30 | 403-524 | not yet reported which blocks → | Bell West Inc. | 2933 | Lethbridge | — |
| 2007-06-14 | 403-754 | not yet reported which blocks → | Bell West Inc. | 2933 | Red Deer | — |
| 2006-06-07 | 403-476 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2006-02-14 | 403-441 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2005-09-07 | 403-695 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2005-08-17 | 403-366 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2005-06-15 | 403-698 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2005-05-06 | 403-420 | not yet reported which blocks → | Bell West Inc. | 2933 | Airdrie | — |
| 2005-05-06 | 403-469 | not yet reported which blocks → | Bell West Inc. | 2933 | High River | — |
| 2005-05-06 | 403-480 | not yet reported which blocks → | Bell West Inc. | 2933 | Strathmore | — |
| 2005-05-06 | 403-621 | not yet reported which blocks → | Bell West Inc. | 2933 | Canmore | — |
| 2005-05-06 | 403-855 | not yet reported which blocks → | Bell West Inc. | 2933 | Cochrane | — |
| 2005-05-06 | 403-939 | not yet reported which blocks → | Bell West Inc. | 2933 | Okotoks | — |
| 2005-04-19 | 403-592 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2004-10-13 | 403-697 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2003-09-04 | 403-355 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2002-08-23 | 403-440 | not yet reported which blocks → | Bell West Inc. | 2933 | Calgary | — |
| 2000-10-27 | 403-388 | not yet reported which blocks → | Bell West Inc. | 2933 | Lethbridge | — |
| 2000-10-27 | 403-488 | not yet reported which blocks → | Bell West Inc. | 2933 | Medicine Hat | — |
| 2000-10-27 | 403-755 | not yet reported which blocks → | Bell West Inc. | 2933 | Red Deer | — |
| 1999-10-27 | 403-410 | not yet reported which blocks → | Bell West Inc. | 2933 | 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.