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 905
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 |
|---|---|---|---|---|---|---|
| 2005-01-18 | 905-398 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Oak Ridges | — |
| 2005-01-18 | 905-710 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Newmarket | — |
| 2004-12-30 | 905-217 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Whitby | — |
| 2004-12-30 | 905-221 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Port Credit | — |
| 2004-12-30 | 905-245 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Oshawa | — |
| 2004-12-30 | 905-253 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Hamilton | — |
| 2004-12-30 | 905-254 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Clarkson | — |
| 2004-12-30 | 905-504 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Bethesda | — |
| 2004-12-30 | 905-915 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Castlemore | — |
| 2004-12-22 | 905-267 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Cooksville | — |
| 2004-12-22 | 905-370 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Thornhill | — |
| 2004-12-22 | 905-489 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Unionville | — |
| 2004-12-14 | 905-419 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Bowmanville | — |
| 2004-12-14 | 905-425 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brooklin | — |
| 2004-12-14 | 905-445 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Hampton | — |
| 2004-12-14 | 905-446 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Newcastle | — |
| 2004-12-14 | 905-485 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Orono | — |
| 2004-12-14 | 905-492 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | South Pickering | — |
| 2004-12-14 | 905-493 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Whitby | — |
| 2004-12-14 | 905-956 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Malton | — |
| 2004-12-14 | 905-997 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Streetsville | — |
| 2004-12-13 | 905-860 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Caledon East | — |
| 2004-12-13 | 905-916 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Clarkson | — |
| 2004-12-13 | 905-990 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Port Credit | — |
| 2004-12-13 | 905-996 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Snelgrove | — |
| 2004-12-13 | 905-998 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Victoria | — |
| 2004-12-10 | 905-503 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Aurora | — |
| 2004-12-10 | 905-533 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Bolton | — |
| 2004-12-10 | 905-534 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Gormley | — |
| 2004-12-10 | 905-535 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Keswick | — |
| 2004-12-10 | 905-539 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | King City | — |
| 2004-12-10 | 905-552 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Kleinburg | — |
| 2004-12-09 | 905-583 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Palgrave | — |
| 2004-12-09 | 905-589 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Queensville | — |
| 2004-12-09 | 905-590 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Schomberg | — |
| 2004-12-09 | 905-591 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Stouffville | — |
| 2004-12-09 | 905-597 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Thornhill | — |
| 2004-12-09 | 905-604 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Unionville | — |
| 2004-12-09 | 905-605 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Woodbridge | — |
| 2004-12-08 | 905-553 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Maple | — |
| 2004-12-08 | 905-554 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Markham | — |
| 2004-12-08 | 905-557 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Mount Albert | — |
| 2004-12-08 | 905-558 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Nobleton | — |
| 2004-12-08 | 905-596 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Sutton | — |
| 2004-11-30 | 905-285 | not yet reported which blocks → | Bell Canada | 8051 | Streetsville | — |
| 2004-11-10 | 905-484 | not yet reported which blocks → | Bell Mobility | 6574 | Oakville | — |
| 2004-11-10 | 905-914 | not yet reported which blocks → | Bell Mobility | 6574 | Oshawa | — |
| 2004-11-10 | 905-995 | not yet reported which blocks → | Bell Mobility | 6574 | Ajax-Pickering | — |
| 2004-10-25 | 905-964 | not yet reported which blocks → | Bell Mobility | 6574 | St. Catharines-Thorold | — |
| 2004-10-14 | 905-941 | not yet reported which blocks → | Bell Mobility | 6574 | St. Catharines-Thorold | — |
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.