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 |
|---|---|---|---|---|---|---|
| 2023-07-20 | 579-257 | not yet reported which blocks → | Bell Canada | 984C | St-Ours | — |
| 2022-12-05 | 579-526 | not yet reported which blocks → | Bell Canada | 984C | Contrecoeur | — |
| 2017-02-08 | 579-618 | not yet reported which blocks → | Bell Canada | 8050 | Chomedey | — |
| 2017-02-08 | 579-619 | not yet reported which blocks → | Bell Canada | 8050 | Ste-Rose | — |
| 2017-02-08 | 579-620 | not yet reported which blocks → | Bell Canada | 8050 | Longueuil | — |
| 2017-02-08 | 579-621 | not yet reported which blocks → | Bell Canada | 8050 | St-Lambert | — |
| 2016-10-06 | 579-609 | not yet reported which blocks → | Bell Canada | 8050 | St-Jean | — |
| 2016-10-06 | 579-612 | not yet reported which blocks → | Bell Canada | 8050 | St-Lambert | — |
| 2016-10-06 | 579-613 | not yet reported which blocks → | Bell Canada | 8050 | Ste-Therese | — |
| 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 | — |
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.