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 |
|---|---|---|---|---|---|---|
| 2018-06-12 | 431-490 | not yet reported which blocks → | Distributel | 081E | Amaranth | — |
| 2018-06-12 | 431-491 | not yet reported which blocks → | Distributel | 081E | Anola | — |
| 2018-06-12 | 431-516 | not yet reported which blocks → | Distributel | 081E | Poplar Point | — |
| 2018-06-12 | 431-517 | not yet reported which blocks → | Distributel | 081E | Rathwell | — |
| 2018-06-12 | 431-518 | not yet reported which blocks → | Distributel | 081E | Roland | — |
| 2018-06-12 | 431-519 | not yet reported which blocks → | Distributel | 081E | Sanford | — |
| 2018-06-12 | 431-520 | not yet reported which blocks → | Distributel | 081E | Sidney | — |
| 2018-06-12 | 431-521 | not yet reported which blocks → | Distributel | 081E | Somerset | — |
| 2018-06-12 | 431-522 | not yet reported which blocks → | Distributel | 081E | Southport | — |
| 2018-06-12 | 431-523 | not yet reported which blocks → | Distributel | 081E | Sperling | — |
| 2018-06-12 | 431-524 | not yet reported which blocks → | Distributel | 081E | St. Claude | — |
| 2018-06-12 | 431-525 | not yet reported which blocks → | Distributel | 081E | Starbuck | — |
| 2018-06-12 | 431-526 | not yet reported which blocks → | Distributel | 081E | Stephenfield | — |
| 2018-06-12 | 431-527 | not yet reported which blocks → | Distributel | 081E | St. Francois Xavier | — |
| 2018-06-12 | 431-528 | not yet reported which blocks → | Distributel | 081E | Stonewall | — |
| 2018-06-12 | 431-529 | not yet reported which blocks → | Distributel | 081E | Swan Lake | — |
| 2018-06-12 | 431-530 | not yet reported which blocks → | Distributel | 081E | Treherne | — |
| 2018-06-11 | 431-494 | not yet reported which blocks → | Distributel | 081E | Dugald | — |
| 2018-06-11 | 431-495 | not yet reported which blocks → | Distributel | 081E | Edwin | — |
| 2018-06-11 | 431-496 | not yet reported which blocks → | Distributel | 081E | Elie | — |
| 2018-06-11 | 431-497 | not yet reported which blocks → | Distributel | 081E | Elm Creek | — |
| 2018-06-11 | 431-498 | not yet reported which blocks → | Distributel | 081E | Gladstone | — |
| 2018-06-11 | 431-499 | not yet reported which blocks → | Distributel | 081E | Hazelridge | — |
| 2018-06-11 | 431-501 | not yet reported which blocks → | Distributel | 081E | Holland | — |
| 2018-06-11 | 431-502 | not yet reported which blocks → | Distributel | 081E | Langruth | — |
| 2018-06-11 | 431-503 | not yet reported which blocks → | Distributel | 081E | Macdonald | — |
| 2018-06-11 | 431-504 | not yet reported which blocks → | Distributel | 081E | Macgregor | — |
| 2018-06-11 | 431-505 | not yet reported which blocks → | Distributel | 081E | Miami | — |
| 2018-06-11 | 431-512 | not yet reported which blocks → | Distributel | 081E | Notre Dame de Lourdes | — |
| 2018-06-11 | 431-513 | not yet reported which blocks → | Distributel | 081E | Oakbank | — |
| 2018-06-11 | 431-514 | not yet reported which blocks → | Distributel | 081E | Oakville | — |
| 2018-06-11 | 431-515 | not yet reported which blocks → | Distributel | 081E | Pilot Mound | — |
| 2018-06-08 | 431-492 | not yet reported which blocks → | Distributel | 081E | Austin | — |
| 2018-06-08 | 431-493 | not yet reported which blocks → | Distributel | 081E | Crystal City | — |
| 2015-08-18 | 431-317 | not yet reported which blocks → | Distributel | 081E | 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.