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
Aug 2026
Jul 2026
Jun 2026
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 |
|---|---|---|---|---|---|---|
| 2016-08-08 | 431-425 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2016-08-08 | 431-426 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2016-08-08 | 431-427 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2016-08-08 | 431-428 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2016-08-08 | 431-429 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2016-08-03 | 431-299 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Glenboro | — |
| 2016-08-03 | 431-399 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Erickson | — |
| 2016-06-22 | 431-801 | not yet reported which blocks → | Iristel Inc. | 154E | Winnipeg | — |
| 2016-05-26 | 431-998 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2016-05-04 | 431-451 | not yet reported which blocks → | Fibernetics Corporation | 464D | Winnipeg | — |
| 2016-03-31 | 431-488 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Douglas | — |
| 2016-03-21 | 431-280 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Minitonas | — |
| 2016-03-18 | 431-335 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2016-03-01 | 431-848 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2016-02-12 | 431-301 | not yet reported which blocks → | Iristel Inc. | 154E | Starbuck | — |
| 2016-02-12 | 431-302 | not yet reported which blocks → | Iristel Inc. | 154E | Stonewall | — |
| 2016-02-01 | 431-300 | not yet reported which blocks → | Iristel Inc. | 154E | Austin | — |
| 2016-01-19 | 431-400 | not yet reported which blocks → | Iristel Inc. | 154E | Portage La Prairie | — |
| 2016-01-04 | 431-847 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2015-12-04 | 431-802 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2015-10-19 | 431-846 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2015-09-28 | 431-334 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2015-09-02 | 431-540 | not yet reported which blocks → | Bell Mobility | 6574 | Brandon | — |
| 2015-09-02 | 431-973 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Strathclair | — |
| 2015-08-18 | 431-317 | not yet reported which blocks → | Distributel | 081E | Winnipeg | — |
| 2015-04-13 | 431-215 | not yet reported which blocks → | Bell West Inc. | 2933 | Steinbach | — |
| 2015-04-13 | 431-216 | not yet reported which blocks → | Bell West Inc. | 2933 | Morden | — |
| 2015-04-13 | 431-217 | not yet reported which blocks → | Bell West Inc. | 2933 | Flin Flon | — |
| 2015-04-13 | 431-218 | not yet reported which blocks → | Bell West Inc. | 2933 | Beausejour | — |
| 2015-04-13 | 431-219 | not yet reported which blocks → | Bell West Inc. | 2933 | Carberry | — |
| 2015-03-04 | 431-205 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Steinbach | — |
| 2014-10-31 | 431-971 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Churchill | — |
| 2014-10-31 | 431-972 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Snow Lake | — |
| 2014-10-09 | 431-200 | not yet reported which blocks → | MTS Inc. | 991B | Winnipeg | — |
| 2014-10-09 | 431-201 | not yet reported which blocks → | MTS Inc. | 991B | Snow Lake | — |
| 2014-08-11 | 431-845 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2014-06-18 | 431-274 | not yet reported which blocks → | MTS Inc. | 991B | Split Lake | — |
| 2014-06-04 | 431-220 | not yet reported which blocks → | Bell West Inc. | 2933 | Dauphin | — |
| 2014-06-04 | 431-221 | not yet reported which blocks → | Bell West Inc. | 2933 | Neepawa | — |
| 2014-06-04 | 431-223 | not yet reported which blocks → | Bell West Inc. | 2933 | Stonewall | — |
| 2014-06-04 | 431-224 | not yet reported which blocks → | Bell West Inc. | 2933 | Thompson | — |
| 2014-06-04 | 431-237 | not yet reported which blocks → | Bell West Inc. | 2933 | Carman | — |
| 2014-06-04 | 431-238 | not yet reported which blocks → | Bell West Inc. | 2933 | Selkirk | — |
| 2014-06-04 | 431-239 | not yet reported which blocks → | Bell West Inc. | 2933 | The Pas | — |
| 2014-06-04 | 431-240 | not yet reported which blocks → | Bell West Inc. | 2933 | Winkler | — |
| 2014-05-08 | 431-487 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Morden | — |
| 2014-04-04 | 431-486 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Morden | — |
| 2013-11-11 | 431-401 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Dauphin | — |
| 2013-11-11 | 431-777 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Winnipeg | — |
| 2013-06-11 | 431-483 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Brandon | — |
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.