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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2000-01-31 | 905-202 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Markham | — |
| 2000-01-31 | 905-222 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Aurora | — |
| 2000-01-31 | 905-223 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Oak Ridges | — |
| 2000-01-31 | 905-266 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Woodbridge | — |
| 2000-01-31 | 905-268 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Cooksville | — |
| 2000-01-31 | 905-423 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Ajax-Pickering | — |
| 2000-01-31 | 905-463 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brampton | — |
| 2000-01-31 | 905-603 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Streetsville | — |
| 1999-11-04 | 905-657 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Newmarket | — |
| 1999-10-27 | 905-656 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Keswick | — |
| 1999-10-13 | 905-908 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Malton | — |
| — | 905-258 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Unionville | — |
| — | 905-284 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Gormley | — |
| — | 905-290 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Cooksville | — |
| — | 905-297 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Hamilton | — |
| — | 905-326 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Thornhill | — |
| — | 905-448 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Oshawa | — |
| — | 905-461 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Malton | — |
| — | 905-480 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Unionville | — |
| — | 905-482 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Thornhill | — |
| — | 905-487 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brampton | — |
| — | 905-652 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Woodbridge | — |
| — | 905-653 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Maple | — |
| — | 905-654 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brampton | — |
| — | 905-907 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Thornhill | — |
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.