NumberResearchRecent prefix assignments
372 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/30/2026
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, last 30 days
New assignments by month
Oct 2026
Sep 2026
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Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Quick find in this area code:
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 519-339 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
| — | 519-341 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Guelph | — |
| — | 519-342 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Kitchener-Waterloo | — |
| — | 519-343 | not yet reported which blocks → | Bell Canada | 8051 | Palmerston | — |
| — | 519-344 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
| — | 519-345 | not yet reported which blocks → | Bell Canada | 8051 | Dublin | — |
| — | 519-347 | not yet reported which blocks → | Bell Canada | 8051 | Monkton | — |
| — | 519-348 | not yet reported which blocks → | Bell Canada | 8051 | Mitchell | — |
| — | 519-349 | not yet reported which blocks → | Quadro Communications Co-operative Inc. | 8203 | Uniondale | — |
| — | 519-351 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| — | 519-352 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| — | 519-353 | not yet reported which blocks → | Bruce Municipal Telephone System | 8205 | Paisley | — |
| — | 519-354 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| — | 519-355 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| — | 519-356 | not yet reported which blocks → | Bell Canada | 8051 | Atwood | — |
| — | 519-357 | not yet reported which blocks → | Bell Canada | 8051 | Wingham | — |
| — | 519-358 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| — | 519-359 | not yet reported which blocks → | Bell Mobility | 6574 | Chatham | — |
| — | 519-360 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| — | 519-361 | not yet reported which blocks → | Bruce Municipal Telephone System | 8205 | Tiverton | — |
| — | 519-362 | not yet reported which blocks → | TELUS Mobility | 8303 | Guelph | — |
| — | 519-363 | not yet reported which blocks → | Bell Canada | 8051 | Chesley | — |
| — | 519-364 | not yet reported which blocks → | Bell Canada | 8051 | Hanover | — |
| — | 519-365 | not yet reported which blocks → | TELUS Mobility | 8303 | Chatham | — |
| — | 519-366 | not yet reported which blocks → | Bell Canada | 8051 | Cargill | — |
| — | 519-367 | not yet reported which blocks → | Wightman Telephone Ltd. | 8245 | Mildmay | — |
| — | 519-368 | not yet reported which blocks → | Bruce Municipal Telephone System | 8205 | Tiverton | — |
| — | 519-369 | not yet reported which blocks → | Bell Canada | 8051 | Durham | — |
| — | 519-371 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| — | 519-372 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| — | 519-373 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| — | 519-374 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| — | 519-375 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| — | 519-376 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| — | 519-377 | not yet reported which blocks → | TELUS Mobility | 8303 | Owen Sound | — |
| — | 519-380 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| — | 519-383 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
| — | 519-389 | not yet reported which blocks → | Bruce Municipal Telephone System | 8205 | Port Elgin | — |
| — | 519-392 | not yet reported which blocks → | Wightman Telephone Ltd. | 8245 | Teeswater | — |
| — | 519-393 | not yet reported which blocks → | Quadro Communications Co-operative Inc. | 8203 | Sebringville | — |
| — | 519-395 | not yet reported which blocks → | Huron Telecommunications Co-operative Ltd. | 8215 | Ripley | — |
| — | 519-396 | not yet reported which blocks → | Bruce Municipal Telephone System | 8205 | Kincardine | — |
| — | 519-421 | not yet reported which blocks → | Bell Canada | 8051 | Woodstock | — |
| — | 519-422 | not yet reported which blocks → | Bell Canada | 8051 | Sauble Beach | — |
| — | 519-423 | not yet reported which blocks → | Bell Canada | 8051 | Beachville | — |
| — | 519-424 | not yet reported which blocks → | Execulink Telecom Inc. | 8216 | Burgessville | — |
| — | 519-425 | not yet reported which blocks → | Bell Canada | 8051 | Ingersoll | — |
| — | 519-426 | not yet reported which blocks → | Bell Canada | 8051 | Simcoe | — |
| — | 519-427 | not yet reported which blocks → | Bell Canada | 8051 | Simcoe | — |
| — | 519-428 | not yet reported which blocks → | Bell Canada | 8051 | Simcoe | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/30/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.