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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2025-06-25 | 548-526 | not yet reported which blocks → | Videotron Ltd. | 383F | Chatham | — |
| 2024-03-20 | 548-502 | not yet reported which blocks → | Videotron Ltd. | 383F | Simcoe | — |
| 2024-03-20 | 548-504 | not yet reported which blocks → | Videotron Ltd. | 383F | Sarnia | — |
| 2024-03-19 | 548-503 | not yet reported which blocks → | Videotron Ltd. | 383F | Orangeville | — |
| 2024-01-05 | 548-498 | not yet reported which blocks → | Videotron Ltd. | 787G | Kitchener-Waterloo | — |
| 2023-10-02 | 548-405 | not yet reported which blocks → | Videotron Ltd. | 328F | Listowel | — |
| 2023-09-29 | 548-294 | not yet reported which blocks → | Videotron Ltd. | 328F | Simcoe | — |
| 2023-09-29 | 548-295 | not yet reported which blocks → | Videotron Ltd. | 328F | Owen Sound | — |
| 2023-09-28 | 548-396 | not yet reported which blocks → | Videotron Ltd. | 328F | Chatham | — |
| 2023-09-21 | 548-395 | not yet reported which blocks → | Videotron Ltd. | 328F | Mount Forest | — |
| 2023-09-11 | 548-394 | not yet reported which blocks → | Videotron Ltd. | 328F | St. Thomas | — |
| 2023-09-07 | 548-385 | not yet reported which blocks → | Videotron Ltd. | 328F | Brantford | — |
| 2023-09-07 | 548-386 | not yet reported which blocks → | Videotron Ltd. | 328F | Sarnia | — |
| 2023-09-07 | 548-387 | not yet reported which blocks → | Videotron Ltd. | 328F | Woodstock | — |
| 2023-09-06 | 548-316 | not yet reported which blocks → | Videotron Ltd. | 328F | Guelph | — |
| 2023-06-16 | 548-389 | not yet reported which blocks → | Videotron Ltd. | 328F | Windsor | — |
| 2023-06-14 | 548-390 | not yet reported which blocks → | Videotron Ltd. | 328F | Kitchener-Waterloo | — |
| 2023-06-14 | 548-391 | not yet reported which blocks → | Videotron Ltd. | 328F | London | — |
| 2022-10-12 | 548-468 | not yet reported which blocks → | Videotron Ltd. | 787G | London | — |
| 2022-10-04 | 548-384 | not yet reported which blocks → | Videotron Ltd. | 787G | Kitchener-Waterloo | — |
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.