NumberResearchRecent prefix assignments
1 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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2026-08-25 | 343-850 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Pakenham | — |
| 2020-12-17 | 343-877 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Kemptville | — |
| 2017-12-04 | 343-880 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Orleans | — |
| 2017-11-27 | 343-984 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Ottawa-Hull | — |
| 2017-05-12 | 343-983 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Cornwall | — |
| 2017-05-11 | 343-982 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brockville | — |
| 2013-10-29 | 343-221 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Orleans | — |
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.