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
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May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-07-31 | 431-541 | not yet reported which blocks → | Bell Mobility | 6574 | Brandon | — |
| 2017-06-15 | 431-806 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 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 | — |
| 2017-03-08 | 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 | — |
| 2017-03-06 | 431-270 | not yet reported which blocks → | Bell Mobility | 6574 | Rivers | — |
| 2017-03-06 | 431-271 | not yet reported which blocks → | Bell Mobility | 6574 | Roblin | — |
| 2017-03-06 | 431-272 | not yet reported which blocks → | Bell Mobility | 6574 | Riverton | — |
| 2017-03-06 | 431-286 | not yet reported which blocks → | Bell Mobility | 6574 | Rossburn | — |
| 2017-03-06 | 431-287 | not yet reported which blocks → | Bell Mobility | 6574 | Sprague | — |
| 2017-03-06 | 431-288 | not yet reported which blocks → | Bell Mobility | 6574 | St. Theresa Point | — |
| 2017-03-06 | 431-289 | not yet reported which blocks → | Bell Mobility | 6574 | Ste. Rose du Lac | — |
| 2017-03-06 | 431-290 | not yet reported which blocks → | Bell Mobility | 6574 | Treherne | — |
| 2017-03-06 | 431-291 | not yet reported which blocks → | Bell Mobility | 6574 | Strathclair | — |
| 2017-03-06 | 431-292 | not yet reported which blocks → | Bell Mobility | 6574 | Woodlands | — |
| 2017-02-21 | 431-342 | not yet reported which blocks → | Bell Mobility | 6574 | Altona | — |
| 2017-02-21 | 431-343 | not yet reported which blocks → | Bell Mobility | 6574 | Beausejour | — |
| 2017-02-21 | 431-344 | not yet reported which blocks → | Bell Mobility | 6574 | Carman | — |
| 2017-02-21 | 431-345 | not yet reported which blocks → | Bell Mobility | 6574 | Dauphin | — |
| 2017-02-21 | 431-346 | not yet reported which blocks → | Bell Mobility | 6574 | Flin Flon | — |
| 2017-02-21 | 431-347 | not yet reported which blocks → | Bell Mobility | 6574 | Lac Du Bonnet | — |
| 2017-02-21 | 431-348 | not yet reported which blocks → | Bell Mobility | 6574 | Lorette | — |
| 2017-02-21 | 431-349 | not yet reported which blocks → | Bell Mobility | 6574 | Morden | — |
| 2017-02-21 | 431-350 | not yet reported which blocks → | Bell Mobility | 6574 | Morris | — |
| 2017-02-21 | 431-351 | not yet reported which blocks → | Bell Mobility | 6574 | Neepawa | — |
| 2017-02-21 | 431-352 | not yet reported which blocks → | Bell Mobility | 6574 | Russell | — |
| 2017-02-21 | 431-353 | not yet reported which blocks → | Bell Mobility | 6574 | Souris | — |
| 2017-02-21 | 431-354 | not yet reported which blocks → | Bell Mobility | 6574 | Thompson | — |
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.