NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 581
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 |
|---|---|---|---|---|---|---|
| 2018-07-11 | 581-508 | not yet reported which blocks → | Iristel Inc. | 154E | Baie-Comeau | — |
| 2018-07-11 | 581-509 | not yet reported which blocks → | Iristel Inc. | 154E | Carleton | — |
| 2018-07-11 | 581-512 | not yet reported which blocks → | Iristel Inc. | 154E | Bonaventure | — |
| 2018-07-11 | 581-513 | not yet reported which blocks → | Iristel Inc. | 154E | Matapedia | — |
| 2018-07-11 | 581-514 | not yet reported which blocks → | Iristel Inc. | 154E | New Richmond | — |
| 2018-06-28 | 581-749 | not yet reported which blocks → | Videotron Ltd. | 8306 | Saint-Henri-de-Levis | — |
| 2018-06-18 | 581-710 | not yet reported which blocks → | Iristel Inc. | 154E | Quebec | — |
| 2018-06-13 | 581-760 | not yet reported which blocks → | Bell Canada | 984C | Saint-Agapit | — |
| 2018-06-11 | 581-507 | not yet reported which blocks → | Iristel Inc. | 154E | Baie-Comeau (Hauterive) | — |
| 2018-06-07 | 581-743 | not yet reported which blocks → | Videotron Ltd. | 8306 | Riviere-du-Loup | — |
| 2018-06-06 | 581-503 | not yet reported which blocks → | Iristel Inc. | 154E | Maria | — |
| 2018-06-06 | 581-504 | not yet reported which blocks → | Iristel Inc. | 154E | Matane | — |
| 2018-06-06 | 581-505 | not yet reported which blocks → | Iristel Inc. | 154E | Sept-Iles | — |
| 2018-06-06 | 581-732 | not yet reported which blocks → | Bell Canada | 984C | Saint-Jean-Port-Joli | — |
| 2018-06-06 | 581-733 | not yet reported which blocks → | Bell Canada | 984C | Saint-Paul-de-Montminy | — |
| 2018-06-06 | 581-734 | not yet reported which blocks → | Bell Canada | 984C | Saint-Roch-des-Aulnaies | — |
| 2018-06-05 | 581-554 | not yet reported which blocks → | TELUS Quebec | 8083 | Saint-Henri-de-Levis | — |
| 2018-06-05 | 581-730 | not yet reported which blocks → | Bell Canada | 984C | L'Islet | — |
| 2018-06-05 | 581-731 | not yet reported which blocks → | Bell Canada | 984C | Saint-Francois | — |
| 2018-06-04 | 581-778 | not yet reported which blocks → | Distributel | 083E | Charny | — |
| 2018-06-04 | 581-779 | not yet reported which blocks → | Distributel | 083E | St-Nicolas | — |
| 2018-05-30 | 581-785 | not yet reported which blocks → | Bell Canada | 984C | Portneuf | — |
| 2018-05-30 | 581-786 | not yet reported which blocks → | Bell Canada | 984C | Saint-Adelphe | — |
| 2018-05-30 | 581-788 | not yet reported which blocks → | Bell Canada | 984C | Saint-Augustin | — |
| 2018-05-30 | 581-789 | not yet reported which blocks → | Bell Canada | 984C | Saint-Basile | — |
| 2018-05-30 | 581-790 | not yet reported which blocks → | Bell Canada | 984C | Saint-Casimir | — |
| 2018-05-30 | 581-791 | not yet reported which blocks → | Bell Canada | 984C | Sainte-Thecle | — |
| 2018-05-30 | 581-792 | not yet reported which blocks → | Bell Canada | 984C | Saint-Marc-des-Carrieres | — |
| 2018-05-30 | 581-793 | not yet reported which blocks → | Bell Canada | 984C | Saint-Raymond | — |
| 2018-05-30 | 581-794 | not yet reported which blocks → | Bell Canada | 984C | Saint-Stanislas | — |
| 2018-05-30 | 581-795 | not yet reported which blocks → | Bell Canada | 984C | Saint-Ubalde | — |
| 2018-05-29 | 581-655 | not yet reported which blocks → | Videotron Ltd. | 8306 | Levis | — |
| 2018-05-29 | 581-782 | not yet reported which blocks → | Bell Canada | 984C | Batiscan | — |
| 2018-05-29 | 581-783 | not yet reported which blocks → | Bell Canada | 984C | Lac-aux-Sables | — |
| 2018-05-29 | 581-784 | not yet reported which blocks → | Bell Canada | 984C | Neuville | — |
| 2018-05-28 | 581-654 | not yet reported which blocks → | Videotron Ltd. | 8306 | Chicoutimi | — |
| 2018-05-24 | 581-693 | not yet reported which blocks → | Bell Canada | 984C | Sainte-Henedine | — |
| 2018-05-24 | 581-694 | not yet reported which blocks → | Bell Canada | 984C | Saint-Joseph-de-Beauce | — |
| 2018-05-24 | 581-695 | not yet reported which blocks → | Bell Canada | 984C | Saint-Patrice-de-Beaurivage | — |
| 2018-05-24 | 581-696 | not yet reported which blocks → | Bell Canada | 984C | Vallee-Jonction | — |
| 2018-05-24 | 581-754 | not yet reported which blocks → | Bell Canada | 984C | Saint-Anselme | — |
| 2018-05-24 | 581-755 | not yet reported which blocks → | Bell Canada | 984C | Saint-Apollinaire | — |
| 2018-05-24 | 581-756 | not yet reported which blocks → | Bell Canada | 984C | Saint-Charles | — |
| 2018-05-24 | 581-757 | not yet reported which blocks → | Bell Canada | 984C | Saint-Lambert-de-Lauzon | — |
| 2018-05-24 | 581-758 | not yet reported which blocks → | Bell Canada | 984C | Saint-Michel | — |
| 2018-05-24 | 581-759 | not yet reported which blocks → | Bell Canada | 984C | Saint-Raphael | — |
| 2018-05-23 | 581-691 | not yet reported which blocks → | Bell Canada | 984C | Frampton | — |
| 2018-05-23 | 581-692 | not yet reported which blocks → | Bell Canada | 984C | Saint-Bernard-de-Dorchester | — |
| 2018-05-17 | 581-461 | not yet reported which blocks → | Bell Canada | 984C | Bonaventure | — |
| 2018-05-17 | 581-462 | not yet reported which blocks → | Bell Canada | 984C | Caplan | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.