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
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Jan 2026
Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2005-10-25 | 519-710 | not yet reported which blocks → | TELUS Mobility | 8303 | Guelph | — |
| 2005-09-15 | 519-918 | not yet reported which blocks → | TELUS Mobility | 8303 | Sarnia | — |
| 2005-08-15 | 519-617 | not yet reported which blocks → | TELUS Mobility | 8303 | London | — |
| 2005-02-25 | 519-709 | not yet reported which blocks → | TELUS Mobility | 8303 | London | — |
| 2004-12-20 | 519-999 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| 2004-03-05 | 519-816 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| 2003-09-25 | 519-447 | not yet reported which blocks → | TELUS Mobility | 8303 | Owen Sound | — |
| 2003-09-24 | 519-891 | not yet reported which blocks → | TELUS Mobility | 8303 | Goderich | — |
| 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 | — |
| 2002-07-29 | 519-778 | not yet reported which blocks → | TELUS Mobility | 8303 | Kitchener-Waterloo | — |
| 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 | — |
| 2002-03-25 | 519-719 | not yet reported which blocks → | TELUS Mobility | 8303 | London | — |
| 2002-03-20 | 519-706 | not yet reported which blocks → | TELUS Mobility | 8303 | Port Elgin | — |
| 2002-03-20 | 519-708 | not yet reported which blocks → | TELUS Mobility | 8303 | Port Elgin | — |
| 2002-02-21 | 519-608 | not yet reported which blocks → | TELUS Mobility | 8303 | Woodstock | — |
| 2002-02-19 | 519-328 | not yet reported which blocks → | TELUS Mobility | 8303 | Sarnia | — |
| 2002-02-19 | 519-387 | not yet reported which blocks → | TELUS Mobility | 8303 | Owen Sound | — |
| 2001-08-07 | 519-909 | not yet reported which blocks → | TELUS Mobility | 8303 | Simcoe | — |
| 2001-01-15 | 519-819 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| 2000-10-31 | 519-808 | not yet reported which blocks → | TELUS Mobility | 8303 | London | — |
| 2000-09-11 | 519-809 | not yet reported which blocks → | TELUS Mobility | 8303 | Chatham | — |
| 2000-09-01 | 519-802 | not yet reported which blocks → | TELUS Mobility | 8303 | Brantford | — |
| 2000-09-01 | 519-803 | not yet reported which blocks → | TELUS Mobility | 8303 | Guelph | — |
| 2000-09-01 | 519-806 | not yet reported which blocks → | TELUS Mobility | 8303 | Orangeville | — |
| 2000-09-01 | 519-807 | not yet reported which blocks → | TELUS Mobility | 8303 | Kitchener-Waterloo | — |
| 2000-08-11 | 519-801 | not yet reported which blocks → | TELUS Mobility | 8303 | Stratford | — |
| 2000-06-28 | 519-818 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| 2000-05-12 | 519-890 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| 2000-04-26 | 519-288 | not yet reported which blocks → | TELUS Mobility | 8303 | Orangeville | — |
| 2000-04-13 | 519-216 | not yet reported which blocks → | TELUS Mobility | 8303 | Orangeville | — |
| 2000-02-10 | 519-223 | not yet reported which blocks → | TELUS Mobility | 8303 | Hespeler | — |
| 2000-01-24 | 519-777 | not yet reported which blocks → | TELUS Mobility | 8303 | London | — |
| — | 519-221 | not yet reported which blocks → | TELUS Mobility | 8303 | Hespeler | — |
| — | 519-222 | not yet reported which blocks → | TELUS Mobility | 8303 | Hespeler | — |
| — | 519-330 | not yet reported which blocks → | TELUS Mobility | 8303 | Sarnia | — |
| — | 519-362 | not yet reported which blocks → | TELUS Mobility | 8303 | Guelph | — |
| — | 519-365 | not yet reported which blocks → | TELUS Mobility | 8303 | Chatham | — |
| — | 519-377 | not yet reported which blocks → | TELUS Mobility | 8303 | Owen Sound | — |
| — | 519-465 | not yet reported which blocks → | TELUS Mobility | 8303 | Kitchener-Waterloo | — |
| — | 519-495 | not yet reported which blocks → | TELUS Mobility | 8303 | London | — |
| — | 519-496 | not yet reported which blocks → | TELUS Mobility | 8303 | Kitchener-Waterloo | — |
| — | 519-520 | not yet reported which blocks → | TELUS Mobility | 8303 | London | — |
| — | 519-521 | not yet reported which blocks → | TELUS Mobility | 8303 | London | — |
| — | 519-564 | not yet reported which blocks → | TELUS Mobility | 8303 | Windsor | — |
| — | 519-635 | not yet reported which blocks → | TELUS Mobility | 8303 | Kitchener-Waterloo | — |
| — | 519-788 | not yet reported which blocks → | TELUS Mobility | 8303 | Woodstock | — |
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.