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.
Most active assignees, all time — NPA 579
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2026-02-05 | 579-581 | not yet reported which blocks → | TELUS Quebec | 2243 | Sutton | — |
| 2026-02-05 | 579-582 | not yet reported which blocks → | TELUS Quebec | 2243 | Ormstown | — |
| 2026-02-05 | 579-583 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Andre Est | — |
| 2025-11-11 | 579-512 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Blaise | — |
| 2025-11-11 | 579-558 | not yet reported which blocks → | TELUS Quebec | 2243 | Franklin Centre | — |
| 2025-10-22 | 579-557 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Chrysostome | — |
| 2025-05-15 | 579-549 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Gabriel-de-Brandon | — |
| 2025-05-15 | 579-553 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Jean-de-Matha | — |
| 2025-05-15 | 579-554 | not yet reported which blocks → | TELUS Quebec | 2243 | Frelighsburg | — |
| 2025-03-31 | 579-552 | not yet reported which blocks → | TELUS Quebec | 2243 | Venise-en-Quebec | — |
| 2024-01-23 | 579-575 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Martine | — |
| 2022-12-01 | 579-733 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Alphonse-de-Rodriguez | — |
| 2022-12-01 | 579-734 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Eustache | — |
| 2022-05-04 | 579-826 | not yet reported which blocks → | TELUS Quebec | 2243 | Mirabel-St-Augustin | — |
| 2022-04-05 | 579-825 | not yet reported which blocks → | TELUS Quebec | 2243 | Contrecoeur | — |
| 2022-03-28 | 579-367 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Hippolyte | — |
| 2022-03-28 | 579-376 | not yet reported which blocks → | TELUS Quebec | 2243 | Hemmingford | — |
| 2022-03-22 | 579-821 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Victoire | — |
| 2022-03-22 | 579-824 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Ours | — |
| 2022-03-08 | 579-820 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Remi | — |
| 2022-03-08 | 579-822 | not yet reported which blocks → | TELUS Quebec | 2243 | Mansonville | — |
| 2022-03-08 | 579-823 | not yet reported which blocks → | TELUS Quebec | 2243 | Eastman | — |
| 2021-04-26 | 579-856 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Jude | — |
| 2021-04-21 | 579-852 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Aime | — |
| 2021-04-21 | 579-853 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Helene-de-Bagot | — |
| 2021-04-21 | 579-854 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Hugues | — |
| 2021-04-21 | 579-855 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Simon | — |
| 2021-02-26 | 579-834 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Justine-de-Newton | — |
| 2021-02-26 | 579-835 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Marc | — |
| 2021-02-26 | 579-836 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Pie-de-Guire | — |
| 2021-02-26 | 579-837 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Polycarpe | — |
| 2021-02-26 | 579-850 | not yet reported which blocks → | TELUS Quebec | 2243 | Waterloo | — |
| 2021-02-25 | 579-830 | not yet reported which blocks → | TELUS Quebec | 2243 | Coteau-Landing | — |
| 2021-02-25 | 579-831 | not yet reported which blocks → | TELUS Quebec | 2243 | Knowlton | — |
| 2021-02-25 | 579-832 | not yet reported which blocks → | TELUS Quebec | 2243 | Riviere-Beaudette | — |
| 2021-02-25 | 579-833 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Denis | — |
| 2020-06-26 | 579-847 | not yet reported which blocks → | TELUS Quebec | 2243 | Chomedey | — |
| 2020-06-16 | 579-849 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Hyacinthe | — |
| 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 | — |
| 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 | — |
| 2017-12-07 | 579-962 | not yet reported which blocks → | TELUS Quebec | 2243 | Morin Heights | — |
| 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 | — |
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.