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 |
|---|---|---|---|---|---|---|
| 2018-06-04 | 581-778 | not yet reported which blocks → | Distributel | 083E | Charny | — |
| 2018-06-04 | 581-779 | not yet reported which blocks → | Distributel | 083E | St-Nicolas | — |
| 2018-05-09 | 581-960 | not yet reported which blocks → | Distributel | 083E | Boischatel | — |
| 2018-05-09 | 581-961 | not yet reported which blocks → | Distributel | 083E | Loretteville | — |
| 2018-05-09 | 581-962 | not yet reported which blocks → | Distributel | 083E | Notre-Dame-des-Laurentides | — |
| 2018-05-09 | 581-963 | not yet reported which blocks → | Distributel | 083E | St-Fereol | — |
| 2018-05-09 | 581-964 | not yet reported which blocks → | Distributel | 083E | St-Jean-ile-d'Orleans | — |
| 2018-05-09 | 581-965 | not yet reported which blocks → | Distributel | 083E | Ste-Petronille | — |
| 2018-05-09 | 581-966 | not yet reported which blocks → | Distributel | 083E | St-Tite-des-Caps | — |
| 2018-05-09 | 581-967 | not yet reported which blocks → | Distributel | 083E | Ste-Anne-de-Beaupre | — |
| 2018-05-09 | 581-968 | not yet reported which blocks → | Distributel | 083E | Ste-Brigitte-de-Laval | — |
| 2018-05-09 | 581-969 | not yet reported which blocks → | Distributel | 083E | Ste-Catherine | — |
| 2018-05-09 | 581-970 | not yet reported which blocks → | Distributel | 083E | Stoneham | — |
| 2018-05-09 | 581-971 | not yet reported which blocks → | Distributel | 083E | Valcartier | — |
| 2018-03-20 | 581-559 | not yet reported which blocks → | Distributel | 083E | Ferland | — |
| 2018-03-20 | 581-564 | not yet reported which blocks → | Distributel | 083E | Jonquiere | — |
| 2018-03-20 | 581-565 | not yet reported which blocks → | Distributel | 083E | La Baie (Chicoutimi Co.) | — |
| 2018-03-20 | 581-566 | not yet reported which blocks → | Distributel | 083E | Laterriere | — |
| 2018-03-20 | 581-567 | not yet reported which blocks → | Distributel | 083E | St-Ambroise-de-Chicoutimi | — |
| 2018-03-20 | 581-568 | not yet reported which blocks → | Distributel | 083E | St-Fulgence | — |
| 2018-03-20 | 581-569 | not yet reported which blocks → | Distributel | 083E | St-Honore (Chicoutimi Co.) | — |
| 2018-03-20 | 581-570 | not yet reported which blocks → | Distributel | 083E | Ste-Rose-du-Nord | — |
| 2018-03-20 | 581-571 | not yet reported which blocks → | Distributel | 083E | Anse-St-Jean | — |
| 2015-08-18 | 581-316 | not yet reported which blocks → | Distributel | 083E | Quebec | — |
| 2015-05-28 | 581-201 | not yet reported which blocks → | Distributel | 083E | Quebec | — |
| 2014-07-02 | 581-925 | not yet reported which blocks → | Distributel | 083E | Quebec | — |
| 2012-08-22 | 581-319 | not yet reported which blocks → | Distributel | 083E | Quebec | — |
| 2011-06-07 | 581-317 | not yet reported which blocks → | Distributel | 083E | Quebec | — |
| 2011-06-07 | 581-318 | not yet reported which blocks → | Distributel | 083E | Quebec | — |
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.