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 |
|---|---|---|---|---|---|---|
| 2015-05-06 | 579-360 | not yet reported which blocks → | Videotron Ltd. | 8306 | Contrecoeur | — |
| 2015-05-06 | 579-370 | not yet reported which blocks → | Videotron Ltd. | 8306 | Notre-Dame-de-Stanbridge | — |
| 2015-05-06 | 579-930 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Pie | — |
| 2015-04-30 | 579-631 | not yet reported which blocks → | Videotron Ltd. | 8306 | Pont-Viau | — |
| 2014-12-05 | 579-440 | not yet reported which blocks → | Videotron Ltd. | 8306 | Frelighsburg | — |
| 2014-11-07 | 579-357 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Gabriel-de-Brandon | — |
| 2014-11-07 | 579-358 | not yet reported which blocks → | Videotron Ltd. | 8306 | Berthierville | — |
| 2014-09-24 | 579-530 | not yet reported which blocks → | Videotron Ltd. | 8306 | Franklin Centre | — |
| 2014-09-24 | 579-722 | not yet reported which blocks → | Videotron Ltd. | 8306 | Henryville | — |
| 2014-09-12 | 579-934 | not yet reported which blocks → | Videotron Ltd. | 8306 | Chomedey | — |
| 2014-05-08 | 579-434 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Remi | — |
| 2014-05-08 | 579-435 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Constant | — |
| 2013-11-01 | 579-436 | not yet reported which blocks → | Videotron Ltd. | 8306 | Sutton | — |
| 2013-11-01 | 579-438 | not yet reported which blocks → | Videotron Ltd. | 8306 | Knowlton | — |
| 2013-10-03 | 579-630 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Therese | — |
| 2012-04-19 | 579-721 | not yet reported which blocks → | Videotron Ltd. | 8306 | Longueuil | — |
| 2012-01-19 | 579-430 | not yet reported which blocks → | Videotron Ltd. | 8306 | Napierville | — |
| 2012-01-19 | 579-431 | not yet reported which blocks → | Videotron Ltd. | 8306 | Lacolle | — |
| 2012-01-19 | 579-432 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Blaise | — |
| 2012-01-19 | 579-433 | not yet reported which blocks → | Videotron Ltd. | 8306 | Bedford | — |
| 2011-06-30 | 579-720 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Lambert | — |
| 2010-11-30 | 579-394 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Sabine | — |
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.