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 |
|---|---|---|---|---|---|---|
| 2019-10-30 | 579-447 | not yet reported which blocks → | Cooptel | 818D | St-Alphonse-de-Rodriguez | — |
| 2019-10-30 | 579-448 | not yet reported which blocks → | Cooptel | 818D | St-Jean-de-Matha | — |
| 2019-10-30 | 579-449 | not yet reported which blocks → | Cooptel | 818D | Rawdon | — |
| 2019-10-18 | 579-798 | not yet reported which blocks → | Iristel Inc. | 154E | Lachute | — |
| 2019-10-07 | 579-957 | not yet reported which blocks → | Videotron Ltd. | 328F | Longueuil | — |
| 2019-09-06 | 579-839 | not yet reported which blocks → | TELUS Quebec | 2243 | Beauharnois | — |
| 2019-09-06 | 579-840 | not yet reported which blocks → | TELUS Quebec | 2243 | Chateauguay | — |
| 2019-09-06 | 579-845 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Constant | — |
| 2019-09-06 | 579-846 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Martine | — |
| 2019-07-26 | 579-807 | not yet reported which blocks → | Iristel Inc. | 154E | Laval-Est | — |
| 2019-07-26 | 579-978 | not yet reported which blocks → | Iristel Inc. | 154E | Laval-Ouest | — |
| 2019-07-26 | 579-986 | not yet reported which blocks → | Iristel Inc. | 154E | L'Epiphanie-l'Assomption | — |
| 2019-07-26 | 579-992 | not yet reported which blocks → | Iristel Inc. | 154E | Lanoraie | — |
| 2019-02-12 | 579-422 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Hippolyte | — |
| 2019-01-08 | 579-730 | not yet reported which blocks → | Videotron Ltd. | 328F | St-Jerome | — |
| 2018-12-06 | 579-537 | not yet reported which blocks → | Videotron Ltd. | 8306 | Bedford | — |
| 2018-12-06 | 579-538 | not yet reported which blocks → | Videotron Ltd. | 8306 | Lacolle | — |
| 2018-12-04 | 579-536 | not yet reported which blocks → | Videotron Ltd. | 8306 | Napierville | — |
| 2018-11-22 | 579-533 | not yet reported which blocks → | Videotron Ltd. | 8306 | Knowlton | — |
| 2018-11-22 | 579-534 | not yet reported which blocks → | Videotron Ltd. | 8306 | Sutton | — |
| 2018-11-22 | 579-535 | not yet reported which blocks → | Videotron Ltd. | 8306 | Frelighsburg | — |
| 2018-11-21 | 579-531 | not yet reported which blocks → | Videotron Ltd. | 8306 | Mansonville | — |
| 2018-11-21 | 579-532 | not yet reported which blocks → | Videotron Ltd. | 8306 | Eastman | — |
| 2018-09-24 | 579-593 | not yet reported which blocks → | TELUS Mobility | 8303 | Joliette | — |
| 2018-09-05 | 579-499 | not yet reported which blocks → | Telebec Ltee. | 8239 | Notre-Dame-de-Stanbridge | — |
| 2018-09-05 | 579-757 | not yet reported which blocks → | Telebec Ltee. | 8239 | Contrecoeur | — |
| 2018-09-05 | 579-848 | not yet reported which blocks → | Telebec Ltee. | 8239 | St-Thomas-d'Aquin | — |
| 2018-08-17 | 579-445 | not yet reported which blocks → | Cooptel | 818D | St-Aime | — |
| 2018-08-17 | 579-688 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | St-Jerome | — |
| 2018-07-05 | 579-502 | not yet reported which blocks → | Iristel Inc. | 154E | Joliette | — |
| 2018-06-15 | 579-306 | not yet reported which blocks → | Distributel | 083E | Laval-Est | — |
| 2018-06-15 | 579-307 | not yet reported which blocks → | Distributel | 083E | Laval-Ouest | — |
| 2018-06-15 | 579-308 | not yet reported which blocks → | Distributel | 083E | St-Vincent-de-Paul | — |
| 2018-06-15 | 579-309 | not yet reported which blocks → | Distributel | 083E | Ste-Rose | — |
| 2018-05-15 | 579-429 | not yet reported which blocks → | Cooptel | 818D | St-Hugues | — |
| 2018-05-15 | 579-443 | not yet reported which blocks → | Cooptel | 818D | St-Jude | — |
| 2018-05-04 | 579-903 | not yet reported which blocks → | Distributel | 083E | Rigaud | — |
| 2018-05-04 | 579-904 | not yet reported which blocks → | Distributel | 083E | Ste-Marthe | — |
| 2018-05-04 | 579-906 | not yet reported which blocks → | Distributel | 083E | Ste-Justine-de-Newton | — |
| 2018-05-04 | 579-907 | not yet reported which blocks → | Distributel | 083E | St-Clet | — |
| 2018-05-04 | 579-909 | not yet reported which blocks → | Distributel | 083E | St-Polycarpe | — |
| 2018-05-04 | 579-912 | not yet reported which blocks → | Distributel | 083E | Ormstown | — |
| 2018-05-04 | 579-915 | not yet reported which blocks → | Distributel | 083E | Riviere-Beaudette | — |
| 2018-05-03 | 579-841 | not yet reported which blocks → | TELUS Quebec | 2243 | Joliette | — |
| 2018-05-03 | 579-842 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Alphonse-de-Rodriguez | — |
| 2018-05-03 | 579-843 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Barthelemy | — |
| 2018-05-03 | 579-844 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Felix-de-Valois | — |
| 2018-05-03 | 579-901 | not yet reported which blocks → | Distributel | 083E | Hudson | — |
| 2018-05-03 | 579-902 | not yet reported which blocks → | Distributel | 083E | Les Cedres | — |
| 2018-05-03 | 579-905 | not yet reported which blocks → | Distributel | 083E | Franklin Centre | — |
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.