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 431
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 |
|---|---|---|---|---|---|---|
| 2026-07-13 | 431-910 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Pine River | — |
| 2026-07-13 | 431-912 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Ethelbert | — |
| 2026-06-30 | 431-564 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Winnipeg | — |
| 2026-02-05 | 431-539 | not yet reported which blocks → | Videotron Ltd. | 383F | Winnipeg | — |
| 2026-02-03 | 431-703 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2026-02-03 | 431-704 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2026-02-03 | 431-705 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2026-02-03 | 431-706 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2026-02-03 | 431-707 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2026-02-03 | 431-708 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2025-12-19 | 431-471 | not yet reported which blocks → | TELUS Mobility | 8303 | Winnipeg | — |
| 2025-11-25 | 431-367 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Winnipeg | — |
| 2025-11-18 | 431-477 | not yet reported which blocks → | Iristel Inc. | 154E | Winnipeg | — |
| 2025-11-18 | 431-479 | not yet reported which blocks → | Iristel Inc. | 154E | Winnipeg | — |
| 2025-10-15 | 431-443 | not yet reported which blocks → | Iristel Inc. | 154E | Stonewall | — |
| 2025-10-07 | 431-459 | not yet reported which blocks → | Iristel Inc. | 154E | Winnipeg | — |
| 2025-09-26 | 431-481 | not yet reported which blocks → | TELUS Mobility | 8303 | Winnipeg | — |
| 2025-08-08 | 431-591 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Sifton | — |
| 2025-08-08 | 431-592 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Fork River | — |
| 2025-08-08 | 431-593 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Winnipegosis | — |
| 2025-08-08 | 431-594 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Ochre River | — |
| 2025-08-08 | 431-595 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Eden | — |
| 2025-08-08 | 431-596 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Kelwood | — |
| 2025-07-11 | 431-510 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Plumas | — |
| 2024-10-17 | 431-442 | not yet reported which blocks → | Iristel Inc. | 154E | Stonewall | — |
| 2024-10-17 | 431-450 | not yet reported which blocks → | Iristel Inc. | 154E | Winnipeg | — |
| 2024-10-17 | 431-640 | not yet reported which blocks → | Iristel Inc. | 154E | Portage La Prairie | — |
| 2024-10-17 | 431-941 | not yet reported which blocks → | Iristel Inc. | 154E | Starbuck | — |
| 2024-09-23 | 431-681 | not yet reported which blocks → | Fibernetics Corporation | 464D | Winnipeg | — |
| 2024-09-17 | 431-791 | not yet reported which blocks → | TELUS Mobility | 8303 | Winnipeg | — |
| 2024-07-29 | 431-590 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2024-06-14 | 431-538 | not yet reported which blocks → | Iristel Inc. | 154E | Austin | — |
| 2024-03-15 | 431-458 | not yet reported which blocks → | Videotron Ltd. | 383F | Winnipeg | — |
| 2024-03-04 | 431-447 | not yet reported which blocks → | Iristel Inc. | 154E | Winnipeg | — |
| 2024-03-04 | 431-449 | not yet reported which blocks → | Iristel Inc. | 154E | Winnipeg | — |
| 2024-01-29 | 431-214 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2024-01-17 | 431-203 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2023-12-14 | 431-371 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2023-12-08 | 431-440 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Winnipeg | — |
| 2023-11-09 | 431-955 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2023-10-30 | 431-701 | not yet reported which blocks → | Iristel Inc. | 346J | Winnipeg | — |
| 2023-10-30 | 431-702 | not yet reported which blocks → | Iristel Inc. | 346J | Winnipeg | — |
| 2023-10-19 | 431-202 | not yet reported which blocks → | Videotron Ltd. | 328F | Winnipeg | — |
| 2023-07-31 | 431-323 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2023-07-10 | 431-370 | not yet reported which blocks → | Fibernetics Corporation | 464D | Winnipeg | — |
| 2023-05-15 | 431-954 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2023-05-10 | 431-340 | not yet reported which blocks → | Iristel Inc. | 154E | Portage La Prairie | — |
| 2023-04-26 | 431-953 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2023-02-07 | 431-952 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2022-12-28 | 431-951 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
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.