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 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 |
|---|---|---|---|---|---|---|
| 2012-10-18 | 581-295 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Chevery | — |
| 2012-10-18 | 581-296 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Bonne-Esperance | — |
| 2012-10-18 | 581-297 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Blanc-Sablon | — |
| 2012-10-18 | 581-298 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Baie-Johan-Beetz | — |
| 2012-10-18 | 581-299 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Aguanish | — |
| 2012-10-18 | 581-301 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Tete-a-la-Baleine | — |
| 2012-10-18 | 581-302 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Saint-Augustin (Duplessis) | — |
| 2012-10-18 | 581-303 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Sept-Iles | — |
| 2012-10-18 | 581-304 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Riviere-au-Tonnerre | — |
| 2012-10-17 | 581-284 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Riviere-Saint-Jean | — |
| 2012-10-17 | 581-285 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Port-Cartier | — |
| 2012-10-17 | 581-286 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Port-Menier | — |
| 2012-10-17 | 581-287 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Pentecote | — |
| 2012-10-17 | 581-288 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Natashquan | — |
| 2012-10-17 | 581-289 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Mutton Bay | — |
| 2012-10-17 | 581-290 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Moisie | — |
| 2012-10-17 | 581-291 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | La Romaine | — |
| 2012-10-17 | 581-292 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Havre-Saint-Pierre | — |
| 2012-10-17 | 581-293 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Harrington Harbour | — |
| 2012-09-13 | 581-596 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Dolbeau | — |
| 2012-09-13 | 581-597 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Desbiens | — |
| 2012-09-13 | 581-598 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Delisle | — |
| 2012-09-13 | 581-599 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Chute-des-Passes | — |
| 2012-09-13 | 581-601 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Albanel | — |
| 2012-09-13 | 581-602 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Chambord | — |
| 2012-09-11 | 581-589 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Milot | — |
| 2012-09-11 | 581-590 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Metabetchouan | — |
| 2012-09-11 | 581-591 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Lac Bouchette | — |
| 2012-09-11 | 581-592 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | La Dore | — |
| 2012-09-11 | 581-593 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Hebertville-Station | — |
| 2012-09-11 | 581-594 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Hebertville | — |
| 2012-09-11 | 581-595 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Girardville | — |
| 2012-09-10 | 581-582 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Gedeon | — |
| 2012-09-10 | 581-583 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Felicien | — |
| 2012-09-10 | 581-584 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Prime | — |
| 2012-09-10 | 581-585 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Roberval | — |
| 2012-09-10 | 581-586 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Peribonka | — |
| 2012-09-10 | 581-587 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Parc-des-Laurentides | — |
| 2012-09-10 | 581-588 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Normandin | — |
| 2012-09-06 | 581-989 | not yet reported which blocks → | TELUS Mobility | 8303 | Quebec | — |
| 2012-09-05 | 581-882 | not yet reported which blocks → | TELUS Mobility | 8303 | Chicoutimi | — |
| 2012-08-27 | 581-384 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Laterriere | — |
| 2012-08-27 | 581-385 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Ambroise-de-Chicoutimi | — |
| 2012-08-27 | 581-386 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Fulgence | — |
| 2012-08-27 | 581-387 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Ste-Rose-du-Nord | — |
| 2012-08-27 | 581-388 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | St-Honore (Chicoutimi Co.) | — |
| 2012-08-27 | 581-389 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | La Baie (Chicoutimi Co.) | — |
| 2012-08-27 | 581-390 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Anse-St-Jean | — |
| 2012-08-24 | 581-382 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Ferland | — |
| 2012-08-24 | 581-383 | not yet reported which blocks → | Telecommunications Xittel Inc | 247F | Jonquiere | — |
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.