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 |
|---|---|---|---|---|---|---|
| 2016-10-06 | 579-614 | not yet reported which blocks → | Bell Canada | 8050 | St-Sauveur | — |
| 2016-10-06 | 579-615 | not yet reported which blocks → | Bell Canada | 8050 | Terrebonne | — |
| 2016-10-06 | 579-616 | not yet reported which blocks → | Bell Canada | 8050 | Valleyfield | — |
| 2016-10-06 | 579-617 | not yet reported which blocks → | Bell Canada | 8050 | St-Jerome | — |
| 2016-09-29 | 579-601 | not yet reported which blocks → | Bell Canada | 8050 | Chateauguay | — |
| 2016-09-29 | 579-602 | not yet reported which blocks → | Bell Canada | 8050 | Granby | — |
| 2016-09-29 | 579-603 | not yet reported which blocks → | Bell Canada | 8050 | Joliette | — |
| 2016-09-29 | 579-604 | not yet reported which blocks → | Bell Canada | 8050 | L'Epiphanie-l'Assomption | — |
| 2016-09-29 | 579-605 | not yet reported which blocks → | Bell Canada | 8050 | Pont-Viau | — |
| 2016-09-29 | 579-606 | not yet reported which blocks → | Bell Canada | 8050 | Sorel | — |
| 2016-09-29 | 579-607 | not yet reported which blocks → | Bell Canada | 8050 | St-Eustache | — |
| 2016-09-29 | 579-608 | not yet reported which blocks → | Bell Canada | 8050 | St-Hyacinthe | — |
| 2016-09-07 | 579-470 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Lanoraie | — |
| 2016-09-07 | 579-471 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Crabtree | — |
| 2016-09-07 | 579-472 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Berthierville | — |
| 2016-08-25 | 579-473 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Rawdon | — |
| 2016-08-01 | 579-480 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | St-Hyacinthe | — |
| 2016-07-19 | 579-474 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Le Gardeur | — |
| 2016-07-06 | 579-281 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Jerome | — |
| 2016-07-06 | 579-282 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Calixte-de-Kilkenny | — |
| 2016-07-06 | 579-283 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Lin | — |
| 2016-07-06 | 579-284 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Hippolyte | — |
| 2016-07-06 | 579-285 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Vincent-de-Paul | — |
| 2016-06-10 | 579-204 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Rose | — |
| 2016-06-07 | 579-640 | not yet reported which blocks → | Videotron Ltd. | 8306 | Chomedey | — |
| 2016-06-07 | 579-641 | not yet reported which blocks → | Videotron Ltd. | 8306 | Ste-Rose | — |
| 2016-06-06 | 579-475 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | L'Epiphanie-l'Assomption | — |
| 2016-05-25 | 579-270 | not yet reported which blocks → | Comwave Networks | 160G | Bedford | — |
| 2016-05-25 | 579-271 | not yet reported which blocks → | Comwave Networks | 160G | Farnham | — |
| 2016-05-25 | 579-272 | not yet reported which blocks → | Comwave Networks | 160G | Lacolle | — |
| 2016-05-25 | 579-741 | not yet reported which blocks → | Comwave Networks | 160G | Actonvale | — |
| 2016-04-25 | 579-921 | not yet reported which blocks → | Comwave Networks | 160G | Franklin Centre | — |
| 2016-04-25 | 579-922 | not yet reported which blocks → | Comwave Networks | 160G | Les Cedres | — |
| 2016-04-25 | 579-923 | not yet reported which blocks → | Comwave Networks | 160G | Ormstown | — |
| 2016-04-25 | 579-924 | not yet reported which blocks → | Comwave Networks | 160G | Riviere-Beaudette | — |
| 2016-04-25 | 579-925 | not yet reported which blocks → | Comwave Networks | 160G | St-Clet | — |
| 2016-04-25 | 579-926 | not yet reported which blocks → | Comwave Networks | 160G | Ste-Justine-de-Newton | — |
| 2016-04-25 | 579-927 | not yet reported which blocks → | Comwave Networks | 160G | Ste-Marthe | — |
| 2016-04-25 | 579-940 | not yet reported which blocks → | Comwave Networks | 160G | Coteau-Landing | — |
| 2016-04-21 | 579-928 | not yet reported which blocks → | Comwave Networks | 160G | Vaudreuil | — |
| 2016-03-21 | 579-205 | not yet reported which blocks → | TELUS Quebec | 2243 | Yamaska | — |
| 2016-03-21 | 579-206 | not yet reported which blocks → | TELUS Quebec | 2243 | Pierreville | — |
| 2016-03-21 | 579-207 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Barthelemy | — |
| 2016-03-21 | 579-208 | not yet reported which blocks → | TELUS Quebec | 2243 | Berthierville | — |
| 2016-03-21 | 579-209 | not yet reported which blocks → | TELUS Quebec | 2243 | Farnham | — |
| 2016-03-07 | 579-794 | not yet reported which blocks → | Iristel Inc. | 154E | St-Jean | — |
| 2016-03-07 | 579-996 | not yet reported which blocks → | Iristel Inc. | 154E | St-Lin | — |
| 2016-03-07 | 579-997 | not yet reported which blocks → | Iristel Inc. | 154E | St-Hyacinthe | — |
| 2016-03-07 | 579-998 | not yet reported which blocks → | Iristel Inc. | 154E | St-Jerome | — |
| 2016-02-19 | 579-793 | not yet reported which blocks → | Iristel Inc. | 154E | Sorel | — |
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.