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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2017-02-21 | 431-355 | not yet reported which blocks → | Bell Mobility | 6574 | The Pas | — |
| 2017-02-21 | 431-356 | not yet reported which blocks → | Bell Mobility | 6574 | Winkler | — |
| 2017-02-21 | 431-357 | not yet reported which blocks → | Bell Mobility | 6574 | Eriksdale | — |
| 2017-02-21 | 431-358 | not yet reported which blocks → | Bell Mobility | 6574 | Holland | — |
| 2017-02-21 | 431-359 | not yet reported which blocks → | Bell Mobility | 6574 | Manitou | — |
| 2017-02-21 | 431-360 | not yet reported which blocks → | Bell Mobility | 6574 | Clear Lake | — |
| 2017-02-21 | 431-361 | not yet reported which blocks → | Bell Mobility | 6574 | Deloraine | — |
| 2017-02-21 | 431-362 | not yet reported which blocks → | Bell Mobility | 6574 | Minnedosa | — |
| 2017-02-21 | 431-363 | not yet reported which blocks → | Bell Mobility | 6574 | Swan River | — |
| 2017-02-21 | 431-365 | not yet reported which blocks → | Bell Mobility | 6574 | Teulon | — |
| 2016-09-30 | 431-336 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 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 | — |
| 2016-01-04 | 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 | — |
| 2014-08-11 | 431-845 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
| 2013-01-30 | 431-944 | not yet reported which blocks → | Bell Mobility | 6574 | Winnipeg | — |
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.