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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2006-05-11 | 519-597 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| 2002-03-14 | 519-943 | not yet reported which blocks → | Bell Canada | 8051 | Orangeville | — |
| 2001-11-01 | 519-346 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
| 2001-11-01 | 519-370 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| 2001-03-23 | 519-593 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| 2001-03-23 | 519-594 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| 2000-10-31 | 519-325 | not yet reported which blocks → | Bell Canada | 8051 | Leamington | — |
| 2000-10-31 | 519-790 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| 2000-10-11 | 519-440 | not yet reported which blocks → | Bell Canada | 8051 | Goderich | — |
| 2000-10-10 | 519-230 | not yet reported which blocks → | Bell Canada | 8051 | Hespeler | — |
| 2000-10-02 | 519-378 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| 2000-09-12 | 519-437 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| 2000-08-18 | 519-730 | not yet reported which blocks → | Bell Canada | 8051 | Amherstburg | — |
| 2000-07-27 | 519-568 | not yet reported which blocks → | Bell Canada | 8051 | Kitchener-Waterloo | — |
| 2000-07-19 | 519-530 | not yet reported which blocks → | Bell Canada | 8051 | Wingham | — |
| 2000-07-19 | 519-921 | not yet reported which blocks → | Bell Canada | 8051 | Durham | — |
| 2000-06-01 | 519-780 | not yet reported which blocks → | Bell Canada | 8051 | Guelph | — |
| 2000-05-12 | 519-384 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
| 2000-03-15 | 519-276 | not yet reported which blocks → | Bell Canada | 8051 | Stratford | — |
| 2000-03-15 | 519-720 | not yet reported which blocks → | Bell Canada | 8051 | Brantford | — |
| 1999-12-22 | 519-321 | not yet reported which blocks → | Bell Canada | 8051 | Mount Forest | — |
| 1999-12-22 | 519-931 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| 1999-12-22 | 519-932 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| 1999-12-03 | 519-951 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| 1999-10-27 | 519-420 | not yet reported which blocks → | Bell Canada | 8051 | Simcoe | — |
| 1999-10-27 | 519-560 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-220 | not yet reported which blocks → | Bell Canada | 8051 | Hespeler | — |
| — | 519-227 | not yet reported which blocks → | Bell Canada | 8051 | Lucan | — |
| — | 519-228 | not yet reported which blocks → | Bell Canada | 8051 | Centralia | — |
| — | 519-232 | not yet reported which blocks → | Bell Canada | 8051 | Nairn | — |
| — | 519-234 | not yet reported which blocks → | Bell Canada | 8051 | Crediton | — |
| — | 519-235 | not yet reported which blocks → | Bell Canada | 8051 | Exeter | — |
| — | 519-239 | not yet reported which blocks → | Bell Canada | 8051 | Hespeler | — |
| — | 519-241 | not yet reported which blocks → | Bell Canada | 8051 | Hespeler | — |
| — | 519-244 | not yet reported which blocks → | Bell Canada | 8051 | Hespeler | — |
| — | 519-245 | not yet reported which blocks → | Bell Canada | 8051 | Strathroy | — |
| — | 519-246 | not yet reported which blocks → | Bell Canada | 8051 | Strathroy | — |
| — | 519-247 | not yet reported which blocks → | Bell Canada | 8051 | Kerwood | — |
| — | 519-249 | not yet reported which blocks → | Bell Canada | 8051 | Hespeler | — |
| — | 519-250 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-251 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-252 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-253 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-254 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-255 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-256 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-257 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-258 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-259 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-262 | not yet reported which blocks → | Bell Canada | 8051 | Hensall | — |
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.