NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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 365
New assignments by month
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2018-09-18 | 365-855 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | St. Catharines-Thorold | — |
| 2018-09-06 | 365-268 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Newmarket | — |
| 2018-08-17 | 365-822 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Milton | — |
| 2018-08-02 | 365-230 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brampton | — |
| 2018-08-02 | 365-231 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brampton | — |
| 2018-06-28 | 365-588 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Dunnville | — |
| 2018-02-21 | 365-228 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oakville | — |
| 2018-02-21 | 365-338 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oakville | — |
| 2018-02-07 | 365-336 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hamilton | — |
| 2018-02-07 | 365-366 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hamilton | — |
| 2017-12-20 | 365-688 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oshawa | — |
| 2017-12-04 | 365-887 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Richmond Hill | — |
| 2017-11-27 | 365-220 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Streetsville | — |
| 2017-11-27 | 365-288 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Cooksville | — |
| 2017-11-27 | 365-388 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Maple | — |
| 2017-11-27 | 365-597 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Thornhill | — |
| 2017-11-27 | 365-608 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Unionville | — |
| 2017-11-27 | 365-788 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brampton | — |
| 2017-11-27 | 365-881 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Oshawa | — |
| 2017-11-27 | 365-988 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Ajax-Pickering | — |
| 2017-07-19 | 365-882 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Aurora | — |
| 2017-07-19 | 365-885 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ajax-Pickering | — |
| 2017-07-19 | 365-886 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ajax-Pickering | — |
| 2017-06-23 | 365-772 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Dunnville | — |
| 2017-06-23 | 365-773 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oakville | — |
| 2016-09-27 | 365-778 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oakville | — |
| 2016-08-10 | 365-889 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hamilton | — |
| 2016-01-27 | 365-777 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Oakville | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.