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 |
|---|---|---|---|---|---|---|
| 2022-05-27 | 431-245 | not yet reported which blocks → | RFNow Inc. | 346G | Baldur | — |
| 2022-05-27 | 431-320 | not yet reported which blocks → | RFNow Inc. | 346G | Swan Lake | — |
| 2018-12-21 | 431-646 | not yet reported which blocks → | RFNow Inc. | 346G | Carberry | — |
| 2018-12-21 | 431-647 | not yet reported which blocks → | RFNow Inc. | 346G | Pipestone | — |
| 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 | — |
| 2017-06-22 | 431-644 | not yet reported which blocks → | RFNow Inc. | 346G | Portage La Prairie | — |
| 2013-05-31 | 431-432 | not yet reported which blocks → | RFNow Inc. | 346G | Brandon | — |
| 2013-05-31 | 431-433 | not yet reported which blocks → | RFNow Inc. | 346G | Winnipeg | — |
| 2013-05-31 | 431-645 | not yet reported which blocks → | RFNow Inc. | 346G | Virden | — |
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.