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
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2022-12-15 | 431-369 | not yet reported which blocks → | Fibernetics Corporation | 464D | Swan Lake | — |
| 2022-12-13 | 431-368 | not yet reported which blocks → | Fibernetics Corporation | 464D | Stonewall | — |
| 2022-11-28 | 431-562 | not yet reported which blocks → | Bell West Inc. | 2933 | Steinbach | — |
| 2022-11-28 | 431-563 | not yet reported which blocks → | Bell West Inc. | 2933 | Thompson | — |
| 2022-11-25 | 431-560 | not yet reported which blocks → | Bell West Inc. | 2933 | Dauphin | — |
| 2022-11-25 | 431-561 | not yet reported which blocks → | Bell West Inc. | 2933 | Selkirk | — |
| 2022-11-11 | 431-599 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Norway House | — |
| 2022-09-22 | 431-829 | not yet reported which blocks → | Iristel Inc. | 154E | Anola | — |
| 2022-09-09 | 431-949 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2022-09-08 | 431-698 | not yet reported which blocks → | TELUS Mobility | 8303 | Steinbach | — |
| 2022-08-16 | 431-246 | not yet reported which blocks → | Fibernetics Corporation | 464D | Rathwell | — |
| 2022-08-16 | 431-247 | not yet reported which blocks → | Fibernetics Corporation | 464D | Roland | — |
| 2022-08-16 | 431-248 | not yet reported which blocks → | Fibernetics Corporation | 464D | Sidney | — |
| 2022-08-16 | 431-249 | not yet reported which blocks → | Fibernetics Corporation | 464D | Somerset | — |
| 2022-08-16 | 431-250 | not yet reported which blocks → | Fibernetics Corporation | 464D | Sperling | — |
| 2022-08-16 | 431-375 | not yet reported which blocks → | Fibernetics Corporation | 464D | St. Adolphe | — |
| 2022-08-16 | 431-376 | not yet reported which blocks → | Fibernetics Corporation | 464D | St. Claude | — |
| 2022-08-16 | 431-377 | not yet reported which blocks → | Fibernetics Corporation | 464D | St. Francois Xavier | — |
| 2022-08-16 | 431-378 | not yet reported which blocks → | Fibernetics Corporation | 464D | Starbuck | — |
| 2022-08-16 | 431-379 | not yet reported which blocks → | Fibernetics Corporation | 464D | Stephenfield | — |
| 2022-06-30 | 431-318 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Edwin | — |
| 2022-06-30 | 431-319 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Portage La Prairie | — |
| 2022-06-27 | 431-909 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Mafeking | — |
| 2022-06-21 | 431-294 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2022-06-21 | 431-960 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Oak Lake | — |
| 2022-06-21 | 431-961 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Virden | — |
| 2022-06-21 | 431-962 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Grand Beach | — |
| 2022-06-21 | 431-963 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Lac Du Bonnet | — |
| 2022-06-21 | 431-964 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Pine Falls | — |
| 2022-06-21 | 431-965 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Altona | — |
| 2022-06-21 | 431-966 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Lundar | — |
| 2022-06-21 | 431-967 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Woodlands | — |
| 2022-06-21 | 431-968 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Garden Hill | — |
| 2022-06-16 | 431-366 | not yet reported which blocks → | Bell Mobility | 6574 | Steinbach | — |
| 2022-05-30 | 431-213 | not yet reported which blocks → | Bell West Inc. | 2933 | Brandon | — |
| 2022-05-30 | 431-575 | not yet reported which blocks → | Bell West Inc. | 2933 | Winnipeg | — |
| 2022-05-27 | 431-245 | not yet reported which blocks → | RFNow Inc. | 346G | Baldur | — |
| 2022-05-27 | 431-320 | not yet reported which blocks → | RFNow Inc. | 346G | Swan Lake | — |
| 2022-05-25 | 431-948 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2022-05-10 | 431-417 | not yet reported which blocks → | LES.NET (1996) Inc. | 141F | Wawanesa | — |
| 2022-03-29 | 431-543 | not yet reported which blocks → | Fibernetics Corporation | 464D | Amaranth | — |
| 2022-03-29 | 431-544 | not yet reported which blocks → | Fibernetics Corporation | 464D | Austin | — |
| 2022-03-29 | 431-545 | not yet reported which blocks → | Fibernetics Corporation | 464D | Crystal City | — |
| 2022-03-29 | 431-546 | not yet reported which blocks → | Fibernetics Corporation | 464D | Edwin | — |
| 2022-03-29 | 431-547 | not yet reported which blocks → | Fibernetics Corporation | 464D | Elm Creek | — |
| 2022-03-29 | 431-548 | not yet reported which blocks → | Fibernetics Corporation | 464D | Gladstone | — |
| 2022-03-29 | 431-549 | not yet reported which blocks → | Fibernetics Corporation | 464D | Hazelridge | — |
| 2022-03-29 | 431-550 | not yet reported which blocks → | Fibernetics Corporation | 464D | Holland | — |
| 2022-03-29 | 431-551 | not yet reported which blocks → | Fibernetics Corporation | 464D | Langruth | — |
| 2022-03-29 | 431-783 | not yet reported which blocks → | Fibernetics Corporation | 464D | Miami | — |
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.