NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-08-09 | 431-307 | not yet reported which blocks → | Fibernetics Corporation | 464D | Winnipeg | — |
| 2017-07-31 | 431-541 | not yet reported which blocks → | Bell Mobility | 6574 | Brandon | — |
| 2017-06-23 | 431-324 | not yet reported which blocks → | RFNow Inc. | 346G | Cromer | — |
| 2017-06-23 | 431-325 | not yet reported which blocks → | RFNow Inc. | 346G | Elkhorn | — |
| 2017-06-23 | 431-326 | not yet reported which blocks → | RFNow Inc. | 346G | Russell | — |
| 2017-06-23 | 431-333 | not yet reported which blocks → | RFNow Inc. | 346G | Oak Lake | — |
| 2017-06-23 | 431-642 | not yet reported which blocks → | RFNow Inc. | 346G | Reston | — |
| 2017-06-23 | 431-643 | not yet reported which blocks → | RFNow Inc. | 346G | Alexander | — |
| 2017-06-23 | 431-880 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Binscarth | — |
| 2017-06-23 | 431-883 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Rossburn | — |
| 2017-06-23 | 431-891 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Strathclair | — |
| 2017-06-22 | 431-644 | not yet reported which blocks → | RFNow Inc. | 346G | Portage La Prairie | — |
| 2017-06-15 | 431-806 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2017-06-08 | 431-631 | not yet reported which blocks → | Iristel Inc. | 154E | Anola | — |
| 2017-06-08 | 431-831 | not yet reported which blocks → | Iristel Inc. | 154E | Anola | — |
| 2017-06-06 | 431-531 | not yet reported which blocks → | Iristel Inc. | 154E | Austin | — |
| 2017-05-24 | 431-304 | not yet reported which blocks → | Iristel Inc. | 154E | Portage La Prairie | — |
| 2017-05-15 | 431-937 | not yet reported which blocks → | LES.NET (1996) Inc. | 141F | Roblin | — |
| 2017-05-02 | 431-448 | not yet reported which blocks → | LES.NET (1996) Inc. | 141F | Eddystone | — |
| 2017-05-01 | 431-881 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Birtle | — |
| 2017-05-01 | 431-882 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Hamiota | — |
| 2017-05-01 | 431-890 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Roblin | — |
| 2017-04-07 | 431-337 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2017-03-21 | 431-241 | not yet reported which blocks → | Bell Mobility | 6574 | Norway House | — |
| 2017-03-21 | 431-242 | not yet reported which blocks → | Bell Mobility | 6574 | Eddystone | — |
| 2017-03-21 | 431-779 | not yet reported which blocks → | Bell Mobility | 6574 | Snow Lake | — |
| 2017-03-21 | 431-782 | not yet reported which blocks → | Bell Mobility | 6574 | Split Lake | — |
| 2017-03-16 | 431-805 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2017-03-16 | 431-884 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Shoal Lake | — |
| 2017-03-16 | 431-888 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Russell | — |
| 2017-03-14 | 431-977 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Winnipeg | — |
| 2017-03-08 | 431-727 | not yet reported which blocks → | Bell Mobility | 6574 | Melita | — |
| 2017-03-07 | 431-252 | not yet reported which blocks → | Bell Mobility | 6574 | Amaranth | — |
| 2017-03-07 | 431-253 | not yet reported which blocks → | Bell Mobility | 6574 | Ashern | — |
| 2017-03-07 | 431-254 | not yet reported which blocks → | Bell Mobility | 6574 | Bissett | — |
| 2017-03-07 | 431-255 | not yet reported which blocks → | Bell Mobility | 6574 | Boissevain | — |
| 2017-03-07 | 431-256 | not yet reported which blocks → | Bell Mobility | 6574 | Fisher River | — |
| 2017-03-07 | 431-257 | not yet reported which blocks → | Bell Mobility | 6574 | Foxwarren | — |
| 2017-03-07 | 431-258 | not yet reported which blocks → | Bell Mobility | 6574 | Gillam | — |
| 2017-03-07 | 431-259 | not yet reported which blocks → | Bell Mobility | 6574 | Grand Rapids | — |
| 2017-03-07 | 431-260 | not yet reported which blocks → | Bell Mobility | 6574 | Grand Beach | — |
| 2017-03-07 | 431-261 | not yet reported which blocks → | Bell Mobility | 6574 | Hamiota | — |
| 2017-03-07 | 431-262 | not yet reported which blocks → | Bell Mobility | 6574 | Libau | — |
| 2017-03-07 | 431-263 | not yet reported which blocks → | Bell Mobility | 6574 | Churchill | — |
| 2017-03-07 | 431-264 | not yet reported which blocks → | Bell Mobility | 6574 | Cross Lake | — |
| 2017-03-07 | 431-265 | not yet reported which blocks → | Bell Mobility | 6574 | Easterville | — |
| 2017-03-07 | 431-266 | not yet reported which blocks → | Bell Mobility | 6574 | Killarney | — |
| 2017-03-07 | 431-267 | not yet reported which blocks → | Bell Mobility | 6574 | Oxford House | — |
| 2017-03-07 | 431-268 | not yet reported which blocks → | Bell Mobility | 6574 | Pilot Mound | — |
| 2017-03-07 | 431-269 | not yet reported which blocks → | Bell Mobility | 6574 | Pointe Du Bois | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.