NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/25/2026
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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2008-05-22 | 905-559 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Oak Ridges | — |
| 2007-06-28 | 905-900 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Aurora | — |
| 2006-09-15 | 905-216 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brampton | — |
| 2006-07-18 | 905-497 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brampton | — |
| 2005-08-17 | 905-551 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Bradford | — |
| 2005-08-17 | 905-748 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Beeton | — |
| 2005-08-08 | 905-406 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Tottenham | — |
| 2005-07-20 | 905-280 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | St. Catharines-Thorold | — |
| 2005-03-23 | 905-496 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Hamilton | — |
| 2005-03-23 | 905-498 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Oshawa | — |
| 2005-02-11 | 905-408 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Claremont | — |
| 2005-01-20 | 905-600 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Streetsville | — |
| 2005-01-19 | 905-200 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Castlemore | — |
| 2005-01-19 | 905-255 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Malton | — |
| 2005-01-19 | 905-400 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Gormley | — |
| 2005-01-19 | 905-402 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Cooksville | — |
| 2005-01-19 | 905-500 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brampton | — |
| 2005-01-19 | 905-585 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Maple | — |
| 2005-01-19 | 905-663 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Woodbridge | — |
| 2005-01-19 | 905-700 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Keswick | — |
| 2005-01-18 | 905-292 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Richmond Hill | — |
| 2005-01-18 | 905-300 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Unionville | — |
| 2005-01-18 | 905-350 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Markham | — |
| 2005-01-18 | 905-395 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Aurora | — |
| 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 | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/25/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.