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 |
|---|---|---|---|---|---|---|
| 2022-03-29 | 431-784 | not yet reported which blocks → | Fibernetics Corporation | 464D | Notre Dame de Lourdes | — |
| 2022-03-29 | 431-785 | not yet reported which blocks → | Fibernetics Corporation | 464D | Oakville | — |
| 2022-03-29 | 431-786 | not yet reported which blocks → | Fibernetics Corporation | 464D | Poplar Point | — |
| 2022-03-24 | 431-947 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2022-02-18 | 431-293 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2022-02-10 | 431-413 | not yet reported which blocks → | LES.NET (1996) Inc. | 141F | Falcon Lake | — |
| 2022-02-10 | 431-414 | not yet reported which blocks → | LES.NET (1996) Inc. | 141F | Lac Du Bonnet | — |
| 2022-02-10 | 431-415 | not yet reported which blocks → | LES.NET (1996) Inc. | 141F | Minnedosa | — |
| 2022-02-10 | 431-416 | not yet reported which blocks → | LES.NET (1996) Inc. | 141F | Ste. Anne | — |
| 2021-12-24 | 431-792 | not yet reported which blocks → | TELUS Mobility | 8303 | Winnipeg | — |
| 2021-12-10 | 431-455 | not yet reported which blocks → | Fibernetics Corporation | 464D | Pilot Mound | — |
| 2021-12-10 | 431-456 | not yet reported which blocks → | Fibernetics Corporation | 464D | Sanford | — |
| 2021-12-10 | 431-457 | not yet reported which blocks → | Fibernetics Corporation | 464D | Southport | — |
| 2021-12-09 | 431-452 | not yet reported which blocks → | Fibernetics Corporation | 464D | Dugald | — |
| 2021-12-09 | 431-453 | not yet reported which blocks → | Fibernetics Corporation | 464D | Elie | — |
| 2021-12-09 | 431-454 | not yet reported which blocks → | Fibernetics Corporation | 464D | Macgregor | — |
| 2021-11-09 | 431-946 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-10-13 | 431-726 | not yet reported which blocks → | TELUS Mobility | 8303 | Steinbach | — |
| 2021-08-19 | 431-905 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Benito | — |
| 2021-08-19 | 431-906 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Birch River | — |
| 2021-08-19 | 431-907 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Bowsman | — |
| 2021-08-19 | 431-908 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Clear Lake | — |
| 2021-08-06 | 431-903 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Holland | — |
| 2021-08-06 | 431-904 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Cypress River | — |
| 2021-07-27 | 431-296 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Dugald | — |
| 2021-07-27 | 431-297 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Oakbank | — |
| 2021-07-27 | 431-298 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Sanford | — |
| 2021-07-27 | 431-506 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St. Adolphe | — |
| 2021-07-27 | 431-507 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St. Francois Xavier | — |
| 2021-07-27 | 431-508 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Starbuck | — |
| 2021-07-27 | 431-509 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Stonewall | — |
| 2021-07-02 | 431-396 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-06-28 | 431-395 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-06-16 | 431-867 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Crystal City | — |
| 2021-06-16 | 431-868 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Pilot Mound | — |
| 2021-06-15 | 431-279 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-05-20 | 431-699 | not yet reported which blocks → | Comwave Networks | 160G | Winnipeg | — |
| 2021-05-13 | 431-869 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Somerset | — |
| 2021-05-13 | 431-870 | not yet reported which blocks → | Westman Media Cooperative Ltd | 120F | Swan Lake | — |
| 2021-05-12 | 431-570 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Winnipeg | — |
| 2021-03-24 | 431-394 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-03-23 | 431-393 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-03-15 | 431-392 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-03-08 | 431-390 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-03-08 | 431-391 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-03-03 | 431-612 | not yet reported which blocks → | MTS Inc. | 8088 | Winnipeg | — |
| 2021-02-23 | 431-209 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-01-20 | 431-208 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-01-18 | 431-207 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2021-01-07 | 431-925 | not yet reported which blocks → | Fibernetics Corporation | 464D | Oakbank | — |
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.