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 |
|---|---|---|---|---|---|---|
| 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 | — |
| 2013-10-29 | 289-537 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Richmond Hill | — |
| 2013-10-29 | 289-554 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Markham | — |
| 2012-04-26 | 289-660 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Ajax-Pickering | — |
| 2011-10-14 | 289-735 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Ancaster | — |
| 2011-10-14 | 289-736 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Cayuga | — |
| 2011-10-14 | 289-737 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Dundas | — |
| 2011-10-14 | 289-738 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Dunnville | — |
| 2011-08-15 | 289-756 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Binbrook | — |
| 2011-08-15 | 289-757 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Caledonia | — |
| 2011-08-15 | 289-758 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Hagersville | — |
| 2011-08-15 | 289-759 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Mount Hope | — |
| 2011-08-15 | 289-760 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Stoney Creek | — |
| 2011-03-23 | 289-674 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Hamilton | — |
| 2011-03-23 | 289-755 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Hamilton | — |
| 2009-11-20 | 289-553 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Maple | — |
| 2009-10-28 | 289-521 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Cooksville | — |
| 2009-10-16 | 289-597 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Thornhill | — |
| 2009-07-14 | 289-752 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brampton | — |
| 2008-05-22 | 289-340 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Newmarket | — |
| 2008-05-22 | 289-342 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Maple | — |
| 2008-05-22 | 289-746 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Gormley | — |
| 2008-03-10 | 289-234 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Oak Ridges | — |
| 2007-06-28 | 289-341 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Niagara Falls | — |
| 2006-09-15 | 289-232 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Cooksville | — |
| 2006-09-15 | 289-240 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Oshawa | — |
| 2006-09-15 | 289-997 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Streetsville | — |
| 2006-03-22 | 289-747 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brampton | — |
| 2006-02-22 | 289-202 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Kleinburg | — |
| 2006-02-09 | 289-344 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Georgetown | — |
| 2006-02-09 | 289-345 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Dundas | — |
| 2006-02-09 | 289-346 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Ancaster | — |
| 2006-02-09 | 289-347 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Welland | — |
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.