NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 |
|---|---|---|---|---|---|---|
| 2019-11-18 | 365-770 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Port Perry | — |
| 2019-11-12 | 365-992 | not yet reported which blocks → | TELUS Mobility | 646F | Hamilton | — |
| 2019-11-12 | 365-993 | not yet reported which blocks → | TELUS Mobility | 646F | Oshawa | — |
| 2019-10-25 | 365-994 | not yet reported which blocks → | TELUS Mobility | 8303 | Brampton | — |
| 2019-10-22 | 365-635 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
| 2019-10-22 | 365-636 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
| 2019-10-18 | 365-799 | not yet reported which blocks → | Iristel Inc. | 154E | Oshawa | — |
| 2019-10-15 | 365-607 | not yet reported which blocks → | Iristel Inc. | 154E | Fort Erie | — |
| 2019-09-18 | 365-898 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Oakville | — |
| 2019-09-11 | 365-556 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Thornhill | — |
| 2019-09-11 | 365-557 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Tottenham | — |
| 2019-09-11 | 365-559 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Unionville | — |
| 2019-09-11 | 365-566 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Woodbridge | — |
| 2019-09-11 | 365-995 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Sutton | — |
| 2019-09-04 | 365-550 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Richmond Hill | — |
| 2019-09-04 | 365-551 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Schomberg | — |
| 2019-09-04 | 365-552 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Stouffville | — |
| 2019-09-04 | 365-553 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Oak Ridges | — |
| 2019-09-04 | 365-633 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Oshawa | — |
| 2019-09-04 | 365-733 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Palgrave | — |
| 2019-09-04 | 365-933 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Queensville | — |
| 2019-09-03 | 365-233 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Mount Albert | — |
| 2019-09-03 | 365-322 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | King City | — |
| 2019-09-03 | 365-337 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Newmarket | — |
| 2019-09-03 | 365-339 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Nobleton | — |
| 2019-09-03 | 365-622 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Kleinburg | — |
| 2019-09-03 | 365-722 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Malton | — |
| 2019-09-03 | 365-899 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Markham | — |
| 2019-09-03 | 365-922 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Maple | — |
| 2019-08-30 | 365-229 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Keswick | — |
| 2019-08-28 | 365-223 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Gormley | — |
| 2019-08-28 | 365-226 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Hagersville | — |
| 2019-08-28 | 365-227 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Hamilton | — |
| 2019-08-27 | 365-838 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Caledon East | — |
| 2019-08-27 | 365-858 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Castlemore | — |
| 2019-08-27 | 365-868 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Cayuga | — |
| 2019-08-27 | 365-878 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Claremont | — |
| 2019-08-27 | 365-989 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Dunnville | — |
| 2019-08-26 | 365-686 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Beeton | — |
| 2019-08-26 | 365-787 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Bethesda | — |
| 2019-08-26 | 365-818 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Bolton | — |
| 2019-08-26 | 365-828 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Bradford | — |
| 2019-08-23 | 365-282 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Ajax-Pickering | — |
| 2019-08-23 | 365-585 | not yet reported which blocks → | Rogers Communications Canada Inc. | 571G | Aurora | — |
| 2019-08-01 | 365-866 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Brampton | — |
| 2019-07-24 | 365-605 | not yet reported which blocks → | Iristel Inc. | 154E | Thornhill | — |
| 2019-07-24 | 365-606 | not yet reported which blocks → | Iristel Inc. | 154E | Thornhill | — |
| 2019-07-17 | 365-691 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
| 2019-07-16 | 365-689 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
| 2019-07-16 | 365-690 | not yet reported which blocks → | Iristel Inc. | 154E | Markham | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.