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 289
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 |
|---|---|---|---|---|---|---|
| 2014-12-05 | 289-514 | not yet reported which blocks → | Iristel Inc. | 154E | Thornhill | — |
| 2014-12-03 | 289-598 | not yet reported which blocks → | TELUS Mobility | 8303 | Burlington | — |
| 2014-11-26 | 289-591 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| 2014-10-15 | 289-666 | not yet reported which blocks → | InnSysVoice Corp | 383H | Markham | — |
| 2014-10-15 | 289-900 | not yet reported which blocks → | InnSysVoice Corp | 383H | Brampton | — |
| 2014-10-03 | 289-508 | not yet reported which blocks → | ExaTEL Inc. | 3147 | Stouffville | — |
| 2014-10-02 | 289-504 | not yet reported which blocks → | ExaTEL Inc. | 3147 | Newmarket | — |
| 2014-10-02 | 289-506 | not yet reported which blocks → | ExaTEL Inc. | 3147 | Richmond Hill | — |
| 2014-10-02 | 289-507 | not yet reported which blocks → | ExaTEL Inc. | 3147 | Markham | — |
| 2014-10-01 | 289-503 | not yet reported which blocks → | ExaTEL Inc. | 3147 | Bolton | — |
| 2014-08-22 | 289-502 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Thornhill | — |
| 2014-08-21 | 289-406 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Brampton | — |
| 2014-08-19 | 289-497 | not yet reported which blocks → | Fibernetics Corporation | 464D | Cooksville | — |
| 2014-07-21 | 289-509 | not yet reported which blocks → | Distributel | 082E | Whitby | — |
| 2014-07-09 | 289-540 | not yet reported which blocks → | Distributel | 082E | Streetsville | — |
| 2014-06-27 | 289-510 | not yet reported which blocks → | Distributel | 082E | Thornhill | — |
| 2014-06-03 | 289-541 | not yet reported which blocks → | Bell Mobility | 6574 | Brampton | — |
| 2014-06-03 | 289-556 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2014-05-30 | 289-405 | not yet reported which blocks → | Bell Mobility | 6574 | Oshawa | — |
| 2014-04-30 | 289-501 | not yet reported which blocks → | Videotron Ltd. | 383F | St. Catharines-Thorold | — |
| 2014-03-03 | 289-403 | not yet reported which blocks → | Bell Canada | 8051 | Ajax-Pickering | — |
| 2014-03-03 | 289-657 | not yet reported which blocks → | Bell Canada | 8051 | Woodbridge | — |
| 2014-02-11 | 289-496 | not yet reported which blocks → | Distributel | 082E | Richmond Hill | — |
| 2014-01-09 | 289-728 | not yet reported which blocks → | Comwave Networks | 160G | Milton | — |
| 2014-01-09 | 289-767 | not yet reported which blocks → | Comwave Networks | 160G | Waterdown | — |
| 2014-01-09 | 289-787 | not yet reported which blocks → | Comwave Networks | 160G | Burlington | — |
| 2014-01-09 | 289-790 | not yet reported which blocks → | Comwave Networks | 160G | Georgetown | — |
| 2014-01-09 | 289-910 | not yet reported which blocks → | Comwave Networks | 160G | Oakville | — |
| 2013-12-24 | 289-515 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Ancaster | — |
| 2013-12-24 | 289-516 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Cayuga | — |
| 2013-12-24 | 289-517 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Dundas | — |
| 2013-12-24 | 289-518 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Dunnville | — |
| 2013-12-24 | 289-520 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Hamilton | — |
| 2013-12-24 | 289-522 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Binbrook | — |
| 2013-12-20 | 289-523 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Caledonia | — |
| 2013-12-20 | 289-524 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Hagersville | — |
| 2013-12-20 | 289-525 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Mount Hope | — |
| 2013-12-20 | 289-526 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Stoney Creek | — |
| 2013-12-16 | 289-565 | not yet reported which blocks → | Distributel | 082E | Cooksville | — |
| 2013-12-10 | 289-463 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Nobleton | — |
| 2013-11-14 | 289-761 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Dunnville | — |
| 2013-11-14 | 289-762 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Fort Erie | — |
| 2013-11-14 | 289-763 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Newmarket | — |
| 2013-11-14 | 289-766 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hamilton | — |
| 2013-10-30 | 289-410 | not yet reported which blocks → | Distributel | 082E | Brampton | — |
| 2013-10-30 | 289-545 | not yet reported which blocks → | Distributel | 082E | Ajax-Pickering | — |
| 2013-10-30 | 289-550 | not yet reported which blocks → | Distributel | 082E | Richmond Hill | — |
| 2013-10-30 | 289-730 | not yet reported which blocks → | Distributel | 082E | Newmarket | — |
| 2013-10-30 | 289-745 | not yet reported which blocks → | Distributel | 082E | Burlington | — |
| 2013-10-29 | 289-537 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Richmond Hill | — |
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.