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
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 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 | — |
| — | 519-429 | not yet reported which blocks → | Bell Canada | 8051 | Simcoe | — |
| — | 519-430 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-431 | not yet reported which blocks → | Bell Canada | 8051 | Courtright | — |
| — | 519-432 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-433 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-434 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-435 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-436 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| — | 519-438 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-439 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-442 | not yet reported which blocks → | Bell Canada | 8051 | Paris | — |
| — | 519-443 | not yet reported which blocks → | Bell Canada | 8051 | Waterford | — |
| — | 519-445 | not yet reported which blocks → | Bell Canada | 8051 | Ohsweken | — |
| — | 519-446 | not yet reported which blocks → | Bell Canada | 8051 | Scotland | — |
| — | 519-448 | not yet reported which blocks → | Bell Canada | 8051 | St. George | — |
| — | 519-449 | not yet reported which blocks → | Bell Canada | 8051 | Burford | — |
| — | 519-451 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-452 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-453 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-454 | not yet reported which blocks → | Bell Canada | 8051 | Bright | — |
| — | 519-455 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
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.