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 |
|---|---|---|---|---|---|---|
| 2014-06-03 | 581-313 | not yet reported which blocks → | Bell Mobility | 6574 | Quebec | — |
| 2014-05-27 | 581-213 | not yet reported which blocks → | TELUS Quebec | 2243 | La Pocatiere | — |
| 2014-05-27 | 581-214 | not yet reported which blocks → | TELUS Quebec | 2243 | Riviere-du-Loup | — |
| 2014-05-27 | 581-442 | not yet reported which blocks → | Bell Aliant, a division of Bell Canada | 709G | Roberval | — |
| 2014-04-04 | 581-986 | not yet reported which blocks → | Videotron Ltd. | 328F | Quebec | — |
| 2014-03-26 | 581-634 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Methode-de-Frontenac | — |
| 2014-03-07 | 581-835 | not yet reported which blocks → | TELUS Quebec | 2243 | Garthby | — |
| 2014-03-07 | 581-840 | not yet reported which blocks → | TELUS Quebec | 2243 | Black Lake | — |
| 2014-02-25 | 581-579 | not yet reported which blocks → | TELUS Mobility | 8303 | Chibougamau | — |
| 2014-02-20 | 581-437 | not yet reported which blocks → | Bell Aliant, a division of Bell Canada | 709G | Riviere-du-Loup | — |
| 2014-02-20 | 581-438 | not yet reported which blocks → | Bell Aliant, a division of Bell Canada | 709G | St-Felicien | — |
| 2014-02-20 | 581-440 | not yet reported which blocks → | Bell Aliant, a division of Bell Canada | 709G | Thetford Mines | — |
| 2014-02-19 | 581-431 | not yet reported which blocks → | Bell Aliant, a division of Bell Canada | 709G | Alma | — |
| 2014-02-19 | 581-433 | not yet reported which blocks → | Bell Aliant, a division of Bell Canada | 709G | Chicoutimi | — |
| 2014-02-19 | 581-434 | not yet reported which blocks → | Bell Aliant, a division of Bell Canada | 709G | Jonquiere | — |
| 2014-02-19 | 581-435 | not yet reported which blocks → | Bell Aliant, a division of Bell Canada | 709G | La Baie (Chicoutimi Co.) | — |
| 2014-01-29 | 581-650 | not yet reported which blocks → | Videotron Ltd. | 8306 | St-Honore (Temiscouata Co.) | — |
| 2014-01-15 | 581-215 | not yet reported which blocks → | Sogetel Inc. | 8237 | Lac-Etchemin | — |
| 2013-11-01 | 581-312 | not yet reported which blocks → | Videotron Ltd. | 8306 | Saint-Come | — |
| 2013-10-08 | 581-300 | not yet reported which blocks → | Videotron Ltd. | 8306 | Quebec | — |
| 2013-10-08 | 581-450 | not yet reported which blocks → | Videotron Ltd. | 8306 | Loretteville | — |
| 2013-09-25 | 581-836 | not yet reported which blocks → | TELUS Quebec | 2243 | Loretteville | — |
| 2013-09-25 | 581-837 | not yet reported which blocks → | TELUS Quebec | 2243 | Stoneham | — |
| 2013-09-25 | 581-838 | not yet reported which blocks → | TELUS Quebec | 2243 | Charny | — |
| 2013-09-25 | 581-839 | not yet reported which blocks → | TELUS Quebec | 2243 | St-Nicolas | — |
| 2013-09-24 | 581-833 | not yet reported which blocks → | TELUS Quebec | 8083 | Donnacona | — |
| 2013-09-24 | 581-834 | not yet reported which blocks → | TELUS Quebec | 8083 | Matane | — |
| 2013-09-17 | 581-628 | not yet reported which blocks → | TELUS Quebec | 2243 | Quebec | — |
| 2013-09-17 | 581-630 | not yet reported which blocks → | TELUS Quebec | 8083 | Bonaventure | — |
| 2013-09-17 | 581-631 | not yet reported which blocks → | TELUS Quebec | 8083 | Matane | — |
| 2013-09-17 | 581-632 | not yet reported which blocks → | TELUS Quebec | 8083 | Montmagny | — |
| 2013-09-17 | 581-633 | not yet reported which blocks → | TELUS Quebec | 8083 | Saint-Henri-de-Levis | — |
| 2013-08-23 | 581-334 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Matane | — |
| 2013-08-23 | 581-335 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Amqui | — |
| 2013-08-23 | 581-336 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Val-Brillant | — |
| 2013-08-23 | 581-338 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Sainte-Anne-des-Monts | — |
| 2013-08-23 | 581-340 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Saint-Ulric | — |
| 2013-08-23 | 581-341 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Saint-Rene-de-Matane | — |
| 2013-08-23 | 581-342 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Saint-Leon-le-Grand | — |
| 2013-08-23 | 581-344 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Sainte-Felicite | — |
| 2013-08-23 | 581-345 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Sayabec | — |
| 2013-08-23 | 581-347 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Mont-Louis | — |
| 2013-08-23 | 581-600 | not yet reported which blocks → | Videotron Ltd. | 8306 | Esprit-Saint | — |
| 2013-08-22 | 581-391 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Les Mechins | — |
| 2013-08-22 | 581-392 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Lac-au-Saumon | — |
| 2013-08-22 | 581-393 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | La Martre | — |
| 2013-08-22 | 581-394 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Causapscal | — |
| 2013-08-22 | 581-395 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Cap-Chat | — |
| 2013-08-22 | 581-396 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Baie-des-Sables | — |
| 2013-07-30 | 581-922 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Quebec | — |
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.