NumberResearchRecent prefix assignments
1 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.
Most active assignees, last 30 days — NPA 343
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 |
|---|---|---|---|---|---|---|
| 2013-10-11 | 343-300 | not yet reported which blocks → | Iristel Inc. | 154E | Brockville | — |
| 2013-10-11 | 343-800 | not yet reported which blocks → | Iristel Inc. | 154E | Smiths Falls | — |
| 2013-10-07 | 343-203 | not yet reported which blocks → | Bell Canada | 8051 | Ottawa-Hull | — |
| 2013-07-30 | 343-777 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Ottawa-Hull | — |
| 2013-06-27 | 343-291 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Ottawa-Hull | — |
| 2013-06-21 | 343-268 | not yet reported which blocks → | Comwave Networks | 160G | Arden | — |
| 2013-06-21 | 343-269 | not yet reported which blocks → | Comwave Networks | 160G | Bancroft | — |
| 2013-06-21 | 343-270 | not yet reported which blocks → | Comwave Networks | 160G | Belleville | — |
| 2013-06-21 | 343-271 | not yet reported which blocks → | Comwave Networks | 160G | Brighton | — |
| 2013-06-20 | 343-265 | not yet reported which blocks → | Comwave Networks | 160G | Deseronto | — |
| 2013-06-20 | 343-266 | not yet reported which blocks → | Comwave Networks | 160G | Kingston | — |
| 2013-06-20 | 343-267 | not yet reported which blocks → | Comwave Networks | 160G | Napanee | — |
| 2013-06-20 | 343-272 | not yet reported which blocks → | Comwave Networks | 160G | Northbrook | — |
| 2013-06-20 | 343-273 | not yet reported which blocks → | Comwave Networks | 160G | Plevna | — |
| 2013-06-11 | 343-355 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Belleville | — |
| 2013-06-11 | 343-356 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Cornwall | — |
| 2013-04-16 | 343-700 | not yet reported which blocks → | Iristel Inc. | 154E | Ottawa-Hull | — |
| 2013-01-07 | 343-887 | not yet reported which blocks → | Fibernetics Corporation | 464D | Ottawa-Hull | — |
| 2012-11-19 | 343-885 | not yet reported which blocks → | Fibernetics Corporation | 464D | Cornwall | — |
| 2012-11-19 | 343-886 | not yet reported which blocks → | Fibernetics Corporation | 464D | Vankleek Hill | — |
| 2012-06-19 | 343-290 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Kingston | — |
| 2012-06-15 | 343-477 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Kingston | — |
| 2012-06-15 | 343-478 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Napanee | — |
| 2012-06-15 | 343-479 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Gananoque | — |
| 2012-04-12 | 343-400 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Perth | — |
| 2012-03-22 | 343-884 | not yet reported which blocks → | Fibernetics Corporation | 464D | Kingston | — |
| 2012-03-20 | 343-882 | not yet reported which blocks → | Fibernetics Corporation | 464D | Ottawa-Hull | — |
| 2012-01-26 | 343-264 | not yet reported which blocks → | TELUS Mobility | 8303 | Brockville | — |
| 2012-01-19 | 343-357 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Bancroft | — |
| 2011-12-20 | 343-333 | not yet reported which blocks → | Videotron Ltd. | 383F | Kingston | — |
| 2011-04-01 | 343-212 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Jockvale | — |
| 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 | — |
| 2010-08-13 | 343-358 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Kingston | — |
| 2010-08-13 | 343-359 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Kanata-Stittsville | — |
| 2010-08-13 | 343-360 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Ottawa-Hull | — |
| 2010-08-13 | 343-361 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Renfrew | — |
| 2010-08-13 | 343-362 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Belleville | — |
| 2009-11-20 | 343-883 | not yet reported which blocks → | Fibernetics Corporation | 464D | Ottawa-Hull | — |
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.