NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/20/2026
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
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May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2008-10-27 | 519-300 | not yet reported which blocks → | Bell Mobility | 6574 | Windsor | — |
| 2006-11-07 | 519-917 | not yet reported which blocks → | Bell Mobility | 6574 | Chatham | — |
| 2006-09-05 | 519-604 | not yet reported which blocks → | Bell Mobility | 6574 | Mount Forest | — |
| 2006-07-04 | 519-444 | not yet reported which blocks → | Bell Mobility | 6574 | Listowel | — |
| 2006-07-04 | 519-450 | not yet reported which blocks → | Bell Mobility | 6574 | Wingham | — |
| 2006-07-04 | 519-613 | not yet reported which blocks → | Bell Mobility | 6574 | Leamington | — |
| 2006-06-23 | 519-441 | not yet reported which blocks → | Bell Mobility | 6574 | Goderich | — |
| 2006-06-23 | 519-540 | not yet reported which blocks → | Bell Mobility | 6574 | Walkerton | — |
| 2006-03-20 | 519-493 | not yet reported which blocks → | Bell Mobility | 6574 | Durham | — |
| 2006-01-26 | 519-477 | not yet reported which blocks → | Bell Mobility | 6574 | Owen Sound | — |
| 2006-01-11 | 519-615 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 2006-01-11 | 519-616 | not yet reported which blocks → | Bell Mobility | 6574 | Kitchener-Waterloo | — |
| 2005-08-15 | 519-403 | not yet reported which blocks → | Bell Mobility | 6574 | Tillsonburg | — |
| 2005-08-10 | 519-402 | not yet reported which blocks → | Bell Mobility | 6574 | Sarnia | — |
| 2005-07-26 | 519-614 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 2005-07-26 | 519-994 | not yet reported which blocks → | Bell Mobility | 6574 | Guelph | — |
| 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 | — |
| 2004-11-10 | 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 | — |
| 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 | — |
| 2002-10-03 | 519-282 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 2002-05-07 | 519-503 | not yet reported which blocks → | Bell Mobility | 6574 | Kitchener-Waterloo | — |
| 2002-03-12 | 519-718 | not yet reported which blocks → | Bell Mobility | 6574 | Simcoe | — |
| 2002-01-11 | 519-312 | not yet reported which blocks → | Bell Mobility | 6574 | Sarnia | — |
| 2001-12-21 | 519-317 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 2001-12-21 | 519-379 | not yet reported which blocks → | Bell Mobility | 6574 | Owen Sound | — |
| 2001-12-21 | 519-965 | not yet reported which blocks → | Bell Mobility | 6574 | Windsor | — |
| 2001-09-19 | 519-716 | not yet reported which blocks → | Bell Mobility | 6574 | Hespeler | — |
| 2001-08-07 | 519-401 | not yet reported which blocks → | Bell Mobility | 6574 | Chatham | — |
| 2001-08-07 | 519-502 | not yet reported which blocks → | Bell Mobility | 6574 | Kitchener-Waterloo | — |
| 2001-04-11 | 519-318 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 2001-02-01 | 519-996 | not yet reported which blocks → | Bell Mobility | 6574 | Windsor | — |
| 2001-01-24 | 519-319 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 2000-10-19 | 519-732 | not yet reported which blocks → | Bell Mobility | 6574 | Brantford | — |
| 2000-10-19 | 519-820 | not yet reported which blocks → | Bell Mobility | 6574 | Guelph | — |
| 2000-07-13 | 519-494 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 2000-07-13 | 519-501 | not yet reported which blocks → | Bell Mobility | 6574 | Kitchener-Waterloo | — |
| 2000-02-22 | 519-982 | not yet reported which blocks → | Bell Mobility | 6574 | Windsor | — |
| 1999-10-21 | 519-476 | not yet reported which blocks → | Bell Mobility | 6574 | London | — |
| 1999-10-21 | 519-897 | not yet reported which blocks → | Bell Mobility | 6574 | Kitchener-Waterloo | — |
| — | 519-240 | not yet reported which blocks → | Bell Mobility | 6574 | Hespeler | — |
| — | 519-242 | not yet reported which blocks → | Bell Mobility | 6574 | Hespeler | — |
| — | 519-331 | not yet reported which blocks → | Bell Mobility | 6574 | Sarnia | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.