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 |
|---|---|---|---|---|---|---|
| 2024-10-03 | 343-979 | not yet reported which blocks → | TELUS Mobility | 8303 | Ottawa-Hull | — |
| 2023-12-18 | 343-324 | not yet reported which blocks → | TELUS Mobility | 8303 | Ottawa-Hull | — |
| 2021-10-14 | 343-462 | not yet reported which blocks → | TELUS Mobility | 8303 | Ottawa-Hull | — |
| 2020-07-21 | 343-463 | not yet reported which blocks → | TELUS Mobility | 8303 | Ottawa-Hull | — |
| 2019-11-28 | 343-366 | not yet reported which blocks → | TELUS Mobility | 646F | Kingston | — |
| 2019-11-28 | 343-368 | not yet reported which blocks → | TELUS Mobility | 646F | Ottawa-Hull | — |
| 2018-09-24 | 343-260 | not yet reported which blocks → | TELUS Mobility | 8303 | Brockville | — |
| 2015-09-22 | 343-261 | not yet reported which blocks → | TELUS Mobility | 8303 | Belleville | — |
| 2014-11-14 | 343-262 | not yet reported which blocks → | TELUS Mobility | 8303 | Ottawa-Hull | — |
| 2012-01-26 | 343-264 | not yet reported which blocks → | TELUS Mobility | 8303 | Brockville | — |
| 2011-04-01 | 343-370 | not yet reported which blocks → | TELUS Mobility | 8303 | Cornwall | — |
| 2011-03-02 | 343-369 | not yet reported which blocks → | TELUS Mobility | 8303 | Pembroke | — |
| 2011-03-01 | 343-263 | not yet reported which blocks → | TELUS Mobility | 8303 | Belleville | — |
| 2010-11-22 | 343-363 | not yet reported which blocks → | TELUS Mobility | 8303 | Kingston | — |
| 2010-11-22 | 343-364 | not yet reported which blocks → | TELUS Mobility | 8303 | 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.