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
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2005-02-25 | 519-266 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | London | — |
| 2005-02-25 | 519-709 | not yet reported which blocks → | TELUS Mobility | 8303 | London | — |
| 2005-02-23 | 519-320 | not yet reported which blocks → | Bell Mobility | 6574 | Woodstock | — |
| 2005-02-22 | 519-278 | not yet reported which blocks → | Bell Mobility | 6574 | Orangeville | — |
| 2005-01-18 | 519-280 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 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 | — |
| 2004-12-20 | 519-999 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| 2004-11-10 | 519-505 | not yet reported which blocks → | Bell Mobility | 6574 | Kitchener-Waterloo | — |
| 2004-11-09 | 519-277 | not yet reported which blocks → | Bell Mobility | 6574 | Hespeler | — |
| 2004-10-22 | 519-513 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Kitchener-Waterloo | — |
| 2004-08-26 | 519-212 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hespeler | — |
| 2004-08-26 | 519-261 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Mount Forest | — |
| 2004-07-30 | 519-286 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | London | — |
| 2004-07-30 | 519-340 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Kitchener-Waterloo | — |
| 2004-07-30 | 519-947 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Preston | — |
| 2004-07-29 | 519-231 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Galt | — |
| 2004-07-29 | 519-248 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Hespeler | — |
| 2004-04-23 | 519-512 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Brantford | — |
| 2004-03-05 | 519-816 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| 2004-02-16 | 519-618 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Galt | — |
| 2003-09-29 | 519-404 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Kitchener-Waterloo | — |
| 2003-09-25 | 519-447 | not yet reported which blocks → | TELUS Mobility | 8303 | Owen Sound | — |
| 2003-09-24 | 519-209 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Brantford | — |
| 2003-09-24 | 519-891 | not yet reported which blocks → | TELUS Mobility | 8303 | Goderich | — |
| 2003-09-03 | 519-913 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | London | — |
| 2003-07-25 | 519-995 | not yet reported which blocks → | Bell Mobility | 6574 | Windsor | — |
| 2003-07-23 | 519-504 | not yet reported which blocks → | Bell Mobility | 6574 | Kitchener-Waterloo | — |
| 2003-07-23 | 519-717 | not yet reported which blocks → | Bell Mobility | 6574 | Brantford | — |
| 2003-05-01 | 519-281 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 2003-03-07 | 519-949 | not yet reported which blocks → | Bell Mobility | 6574 | Stratford | — |
| 2003-03-07 | 519-993 | not yet reported which blocks → | Bell Mobility | 6574 | Guelph | — |
| 2003-02-06 | 519-397 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Chatham | — |
| 2003-02-05 | 519-707 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Kitchener-Waterloo | — |
| 2003-02-05 | 519-840 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Guelph | — |
| 2003-02-05 | 519-930 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | London | — |
| 2003-02-05 | 519-962 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Windsor | — |
| 2003-01-21 | 519-619 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | London | — |
| 2002-11-22 | 519-990 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| 2002-11-22 | 519-998 | not yet reported which blocks → | TELUS Mobility | 8303 | Kitchener-Waterloo | — |
| 2002-10-17 | 519-838 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Guelph | — |
| 2002-10-03 | 519-282 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 2002-08-23 | 519-498 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Kitchener-Waterloo | — |
| 2002-07-29 | 519-492 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Listowel | — |
| 2002-07-29 | 519-778 | not yet reported which blocks → | TELUS Mobility | 8303 | Kitchener-Waterloo | — |
| 2002-07-22 | 519-388 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Chatham | — |
| 2002-07-08 | 519-313 | not yet reported which blocks → | TELUS Mobility | 8303 | Mount Forest | — |
| 2002-07-08 | 519-314 | not yet reported which blocks → | TELUS Mobility | 8303 | Mount Forest | — |
| 2002-07-08 | 519-919 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| 2002-06-11 | 519-703 | not yet reported which blocks → | TELUS Mobility | 8303 | Stratford | — |
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.