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 |
|---|---|---|---|---|---|---|
| 2018-01-23 | 581-688 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Quebec | — |
| 2014-06-05 | 581-920 | not yet reported which blocks → | Fido Solutions Inc. | 8820 | Levis | — |
| 2013-07-30 | 581-922 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Quebec | — |
| 2012-08-07 | 581-722 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Saint-Georges-de-Beauce | — |
| 2012-04-12 | 581-721 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | St-Felicien | — |
| 2011-09-19 | 581-726 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Baie-Comeau (Hauterive) | — |
| 2011-07-28 | 581-777 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Quebec | — |
| 2008-09-09 | 581-724 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Thetford Mines | — |
| 2008-09-09 | 581-725 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Montmagny | — |
| 2008-09-09 | 581-727 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | La Malbaie | — |
| 2008-09-09 | 581-728 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Alma | — |
| 2008-09-09 | 581-729 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Riviere-du-Loup | — |
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.