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 |
|---|---|---|---|---|---|---|
| 2010-02-25 | 403-805 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2009-12-03 | 403-915 | not yet reported which blocks → | Bell Mobility | 6574 | Lethbridge | — |
| 2009-10-15 | 403-702 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2009-04-22 | 403-437 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2008-10-21 | 403-354 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2008-09-19 | 403-408 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2008-04-11 | 403-404 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2008-03-13 | 403-797 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2007-08-16 | 403-409 | not yet reported which blocks → | Bell Mobility | 6574 | Brooks | — |
| 2007-08-10 | 403-796 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2007-06-12 | 403-459 | not yet reported which blocks → | Bell Mobility | 6574 | Crowsnest Pass | — |
| 2007-06-12 | 403-482 | not yet reported which blocks → | Bell Mobility | 6574 | Milk River | — |
| 2007-06-12 | 403-484 | not yet reported which blocks → | Bell Mobility | 6574 | Pincher Creek | — |
| 2007-06-12 | 403-551 | not yet reported which blocks → | Bell Mobility | 6574 | Vauxhall | — |
| 2007-06-12 | 403-706 | not yet reported which blocks → | Bell Mobility | 6574 | Claresholm | — |
| 2007-03-14 | 403-412 | not yet reported which blocks → | Bell Mobility | 6574 | Three Hills | — |
| 2007-03-14 | 403-413 | not yet reported which blocks → | Bell Mobility | 6574 | Coronation | — |
| 2007-03-14 | 403-414 | not yet reported which blocks → | Bell Mobility | 6574 | Oyen | — |
| 2007-03-14 | 403-415 | not yet reported which blocks → | Bell Mobility | 6574 | Olds | — |
| 2007-03-14 | 403-417 | not yet reported which blocks → | Bell Mobility | 6574 | Veteran | — |
| 2007-03-14 | 403-418 | not yet reported which blocks → | Bell Mobility | 6574 | Rocky Mountain House | — |
| 2007-03-14 | 403-419 | not yet reported which blocks → | Bell Mobility | 6574 | Sundre | — |
| 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 | — |
| 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 | — |
| 2006-09-29 | 403-483 | not yet reported which blocks → | Bell Mobility | 6574 | 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 | — |
| 2006-06-21 | 403-479 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2006-02-06 | 403-478 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2006-01-26 | 403-466 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2006-01-18 | 403-467 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2005-12-21 | 403-597 | not yet reported which blocks → | Bell Mobility | 6574 | Red Deer | — |
| 2005-07-29 | 403-465 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2005-07-20 | 403-464 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2005-06-29 | 403-463 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2005-04-08 | 403-462 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2004-11-09 | 403-923 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2004-10-13 | 403-922 | not yet reported which blocks → | Bell Mobility | 6574 | 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.