NumberResearchRecent prefix assignments
1 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.
Most active assignees, last 30 days — NPA 579
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2018-05-03 | 579-908 | not yet reported which blocks → | Distributel | 083E | Coteau-du-Lac | — |
| 2018-05-03 | 579-910 | not yet reported which blocks → | Distributel | 083E | Coteau-Landing | — |
| 2018-05-03 | 579-913 | not yet reported which blocks → | Distributel | 083E | Huntingdon | — |
| 2018-04-13 | 579-323 | not yet reported which blocks → | Distributel | 083E | St-Cesaire | — |
| 2018-04-13 | 579-324 | not yet reported which blocks → | Distributel | 083E | St-Paul-D'Abbotsford | — |
| 2018-04-13 | 579-325 | not yet reported which blocks → | Distributel | 083E | Waterloo | — |
| 2018-04-13 | 579-328 | not yet reported which blocks → | Distributel | 083E | Mansonville | — |
| 2018-04-13 | 579-329 | not yet reported which blocks → | Distributel | 083E | Sutton | — |
| 2018-04-12 | 579-319 | not yet reported which blocks → | Distributel | 083E | Bromont | — |
| 2018-04-12 | 579-320 | not yet reported which blocks → | Distributel | 083E | Cowansville | — |
| 2018-04-12 | 579-321 | not yet reported which blocks → | Distributel | 083E | Dunham | — |
| 2018-04-12 | 579-322 | not yet reported which blocks → | Distributel | 083E | Knowlton | — |
| 2018-04-12 | 579-326 | not yet reported which blocks → | Distributel | 083E | Eastman | — |
| 2018-04-12 | 579-327 | not yet reported which blocks → | Distributel | 083E | Frelighsburg | — |
| 2018-04-10 | 579-338 | not yet reported which blocks → | Distributel | 083E | Ste-Julienne | — |
| 2018-04-10 | 579-339 | not yet reported which blocks → | Distributel | 083E | St-Gabriel-de-Brandon | — |
| 2018-04-10 | 579-340 | not yet reported which blocks → | Distributel | 083E | St-Jacques | — |
| 2018-04-10 | 579-341 | not yet reported which blocks → | Distributel | 083E | St-Alphonse-de-Rodriguez | — |
| 2018-04-10 | 579-342 | not yet reported which blocks → | Distributel | 083E | St-Jean-de-Matha | — |
| 2018-04-10 | 579-344 | not yet reported which blocks → | Distributel | 083E | St-Felix-de-Valois | — |
| 2018-04-10 | 579-345 | not yet reported which blocks → | Distributel | 083E | St-Zenon | — |
| 2018-04-10 | 579-346 | not yet reported which blocks → | Distributel | 083E | St-Barthelemy | — |
| 2018-04-10 | 579-347 | not yet reported which blocks → | Distributel | 083E | St-Michel-des-Saints | — |
| 2018-03-22 | 579-312 | not yet reported which blocks → | Distributel | 083E | Chambly | — |
| 2018-03-22 | 579-313 | not yet reported which blocks → | Distributel | 083E | Marieville | — |
| 2018-03-22 | 579-314 | not yet reported which blocks → | Distributel | 083E | St-Bruno | — |
| 2018-03-22 | 579-315 | not yet reported which blocks → | Distributel | 083E | St-Marc | — |
| 2018-03-22 | 579-316 | not yet reported which blocks → | Distributel | 083E | Ste-Julie-de-Vercheres | — |
| 2018-03-22 | 579-317 | not yet reported which blocks → | Distributel | 083E | Varennes | — |
| 2018-03-22 | 579-318 | not yet reported which blocks → | Distributel | 083E | Vercheres | — |
| 2018-02-28 | 579-442 | not yet reported which blocks → | Cooptel | 818D | Granby | — |
| 2018-02-15 | 579-303 | not yet reported which blocks → | Distributel | 083E | Ste-Therese | — |
| 2018-02-15 | 579-304 | not yet reported which blocks → | Distributel | 083E | St-Jerome | — |
| 2018-02-15 | 579-305 | not yet reported which blocks → | Distributel | 083E | St-Hyacinthe | — |
| 2017-12-11 | 579-486 | not yet reported which blocks → | Iristel Inc. | 154E | St-Eustache | — |
| 2017-12-07 | 579-962 | not yet reported which blocks → | TELUS Quebec | 2243 | Morin Heights | — |
| 2017-11-30 | 579-302 | not yet reported which blocks → | Iristel Inc. | 154E | Pont-Viau | — |
| 2017-11-30 | 579-806 | not yet reported which blocks → | Iristel Inc. | 154E | Laprairie | — |
| 2017-11-30 | 579-988 | not yet reported which blocks → | Iristel Inc. | 154E | Ste-Therese | — |
| 2017-11-23 | 579-803 | not yet reported which blocks → | Iristel Inc. | 154E | Lachute | — |
| 2017-11-23 | 579-804 | not yet reported which blocks → | Iristel Inc. | 154E | Laval-Est | — |
| 2017-11-23 | 579-805 | not yet reported which blocks → | Iristel Inc. | 154E | Laval-Ouest | — |
| 2017-11-16 | 579-265 | not yet reported which blocks → | TELUS Quebec | 2243 | Huntingdon | — |
| 2017-11-07 | 579-295 | not yet reported which blocks → | TELUS Quebec | 2243 | Henryville | — |
| 2017-11-07 | 579-296 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Jean | — |
| 2017-11-07 | 579-297 | not yet reported which blocks → | TELUS Quebec | 2243 | Bedford | — |
| 2017-11-07 | 579-298 | not yet reported which blocks → | TELUS Quebec | 2243 | Lacolle | — |
| 2017-11-07 | 579-299 | not yet reported which blocks → | TELUS Quebec | 2243 | Hemmingford | — |
| 2017-11-07 | 579-301 | not yet reported which blocks → | TELUS Quebec | 2243 | Napierville | — |
| 2017-08-09 | 579-802 | not yet reported which blocks → | Iristel Inc. | 154E | Valleyfield | — |
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.