NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 519-375 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| — | 519-376 | not yet reported which blocks → | Bell Canada | 8051 | Owen Sound | — |
| — | 519-380 | not yet reported which blocks → | Bell Canada | 8051 | Chatham | — |
| — | 519-383 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
| — | 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 | — |
| — | 519-425 | 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 | — |
| — | 519-457 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-458 | not yet reported which blocks → | Bell Canada | 8051 | Princeton | — |
| — | 519-461 | not yet reported which blocks → | Bell Canada | 8051 | Thorndale | — |
| — | 519-462 | not yet reported which blocks → | Bell Canada | 8051 | Hickson | — |
| — | 519-463 | not yet reported which blocks → | Bell Canada | 8051 | Drumbo | — |
| — | 519-464 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
| — | 519-467 | not yet reported which blocks → | Bell Canada | 8051 | Eastwood | — |
| — | 519-469 | not yet reported which blocks → | Bell Canada | 8051 | Innerkip | — |
| — | 519-471 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-472 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-473 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-474 | not yet reported which blocks → | Bell Canada | 8051 | London | — |
| — | 519-475 | not yet reported which blocks → | Bell Canada | 8051 | Embro | — |
| — | 519-481 | not yet reported which blocks → | Bell Canada | 8051 | Corunna | — |
| — | 519-482 | not yet reported which blocks → | Bell Canada | 8051 | Clinton | — |
| — | 519-484 | not yet reported which blocks → | Bell Canada | 8051 | Mount Pleasant | — |
| — | 519-485 | not yet reported which blocks → | Bell Canada | 8051 | Ingersoll | — |
| — | 519-490 | not yet reported which blocks → | Bell Canada | 8051 | Sarnia | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.