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 519
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 |
|---|---|---|---|---|---|---|
| 2006-09-19 | 519-954 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Kitchener-Waterloo | — |
| 2006-07-18 | 519-601 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | London | — |
| 2006-06-27 | 519-952 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Jarvis | — |
| 2006-02-10 | 519-419 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Windsor | — |
| 2006-02-10 | 519-478 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Tecumseh | — |
| 2006-02-10 | 519-479 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Sarnia | — |
| 2006-02-10 | 519-480 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Chatham | — |
| 2005-11-14 | 519-405 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Innerkip | — |
| 2005-11-14 | 519-409 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Tillsonburg | — |
| 2005-11-14 | 519-412 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Tavistock | — |
| 2005-11-14 | 519-414 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | St. George | — |
| 2005-10-18 | 519-218 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | St. Clements | — |
| 2005-10-18 | 519-549 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Thorndale | — |
| 2005-10-18 | 519-558 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Belmont | — |
| 2005-10-18 | 519-559 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Mount Brydges | — |
| 2005-10-05 | 519-390 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | New Hamburg | — |
| 2005-10-05 | 519-391 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | New Dundee | — |
| 2005-10-05 | 519-394 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Ayr | — |
| 2005-07-20 | 519-309 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brantford | — |
| 2005-07-14 | 519-306 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Shelburne | — |
| 2005-07-14 | 519-307 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Orangeville | — |
| 2005-07-14 | 519-308 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Hillsburgh | — |
| 2005-07-14 | 519-315 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Erin | — |
| 2005-07-14 | 519-316 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Caledon | — |
| 2005-06-30 | 519-305 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Stratford | — |
| 2005-06-21 | 519-290 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Woodstock | — |
| 2005-06-21 | 519-295 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Thamesford | — |
| 2005-06-21 | 519-302 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Paris | — |
| 2005-06-21 | 519-303 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Ingersoll | — |
| 2005-06-21 | 519-304 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brantford | — |
| 2005-06-14 | 519-219 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Preston | — |
| 2005-06-14 | 519-260 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Hespeler | — |
| 2005-06-14 | 519-265 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Guelph | — |
| 2005-06-14 | 519-267 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Galt | — |
| 2005-05-30 | 519-207 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | St. Thomas | — |
| 2005-05-27 | 519-205 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Strathroy | — |
| 2005-05-27 | 519-206 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | St. Jacobs | — |
| 2005-05-27 | 519-208 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Kitchener-Waterloo | — |
| 2005-05-27 | 519-210 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Elmira | — |
| 2005-05-27 | 519-213 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Breslau | — |
| 2005-05-27 | 519-214 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Baden | — |
| 2005-05-26 | 519-202 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Dorchester | — |
| 2005-05-26 | 519-203 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Lambeth | — |
| 2005-05-26 | 519-204 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | London | — |
| 2005-04-04 | 519-516 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brantford | — |
| 2005-03-24 | 519-552 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | London | — |
| 2005-03-24 | 519-553 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Guelph | — |
| 2005-03-24 | 519-554 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Kitchener-Waterloo | — |
| 2004-12-29 | 519-514 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Kitchener-Waterloo | — |
| 2004-12-29 | 519-515 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Guelph | — |
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.