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 |
|---|---|---|---|---|---|---|
| 2024-05-13 | 343-620 | not yet reported which blocks → | Videotron Ltd. | 328F | Pembroke | — |
| 2024-03-26 | 343-509 | not yet reported which blocks → | Videotron Ltd. | 383F | Smiths Falls | — |
| 2023-09-25 | 343-843 | not yet reported which blocks → | Videotron Ltd. | 787G | Ottawa-Hull | — |
| 2023-09-21 | 343-703 | not yet reported which blocks → | Videotron Ltd. | 328F | Brockville | — |
| 2022-10-28 | 343-322 | not yet reported which blocks → | Videotron Ltd. | 787G | Ottawa-Hull | — |
| 2020-10-16 | 343-209 | not yet reported which blocks → | Videotron Ltd. | 328F | Ottawa-Hull | — |
| 2020-01-17 | 343-254 | not yet reported which blocks → | Videotron Ltd. | 787G | Ottawa-Hull | — |
| 2019-12-19 | 343-580 | not yet reported which blocks → | Videotron Ltd. | 383F | Kingston | — |
| 2018-11-22 | 343-297 | not yet reported which blocks → | Videotron Ltd. | 787G | Ottawa-Hull | — |
| 2018-10-03 | 343-636 | not yet reported which blocks → | Videotron Ltd. | 383F | Ingleside | — |
| 2018-10-03 | 343-980 | not yet reported which blocks → | Videotron Ltd. | 383F | Petawawa | — |
| 2018-10-02 | 343-737 | not yet reported which blocks → | Videotron Ltd. | 383F | St-Regis | — |
| 2018-10-02 | 343-970 | not yet reported which blocks → | Videotron Ltd. | 383F | Cobden | — |
| 2018-09-27 | 343-295 | not yet reported which blocks → | Videotron Ltd. | 383F | Napanee | — |
| 2018-09-27 | 343-325 | not yet reported which blocks → | Videotron Ltd. | 383F | Trenton | — |
| 2018-09-27 | 343-335 | not yet reported which blocks → | Videotron Ltd. | 383F | Prescott | — |
| 2018-09-26 | 343-405 | not yet reported which blocks → | Videotron Ltd. | 383F | Morrisburg | — |
| 2018-09-25 | 343-315 | not yet reported which blocks → | Videotron Ltd. | 383F | Brighton | — |
| 2018-08-29 | 343-367 | not yet reported which blocks → | Videotron Ltd. | 383F | Belleville | — |
| 2018-08-29 | 343-507 | not yet reported which blocks → | Videotron Ltd. | 383F | Brockville | — |
| 2018-08-29 | 343-567 | not yet reported which blocks → | Videotron Ltd. | 383F | Pembroke | — |
| 2018-08-29 | 343-867 | not yet reported which blocks → | Videotron Ltd. | 383F | Cornwall | — |
| 2018-04-11 | 343-202 | not yet reported which blocks → | Videotron Ltd. | 328F | Ottawa-Hull | — |
| 2017-02-02 | 343-204 | not yet reported which blocks → | Videotron Ltd. | 328F | Ottawa-Hull | — |
| 2017-01-23 | 343-201 | not yet reported which blocks → | Videotron Ltd. | 328F | Alfred | — |
| 2016-08-29 | 343-665 | not yet reported which blocks → | Videotron Ltd. | 787G | Ottawa-Hull | — |
| 2015-05-06 | 343-200 | not yet reported which blocks → | Videotron Ltd. | 8306 | Rockland | — |
| 2011-12-20 | 343-333 | not yet reported which blocks → | Videotron Ltd. | 383F | Kingston | — |
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.