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 |
|---|---|---|---|---|---|---|
| 2021-12-13 | 343-865 | not yet reported which blocks → | Fibernetics Corporation | 464D | Wellington | — |
| 2021-12-13 | 343-866 | not yet reported which blocks → | Fibernetics Corporation | 464D | Wooler | — |
| 2021-12-06 | 343-227 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Ottawa-Hull | — |
| 2021-11-08 | 343-210 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Clarence Creek | — |
| 2021-11-08 | 343-759 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Embrun | — |
| 2021-10-14 | 343-462 | not yet reported which blocks → | TELUS Mobility | 8303 | Ottawa-Hull | — |
| 2021-09-23 | 343-423 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Stirling | — |
| 2021-09-23 | 343-424 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Trenton | — |
| 2021-09-23 | 343-425 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Thurlow | — |
| 2021-09-23 | 343-426 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Tweed | — |
| 2021-09-23 | 343-427 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Wellington | — |
| 2021-09-23 | 343-428 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Wooler | — |
| 2021-09-22 | 343-354 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Denbigh | — |
| 2021-09-22 | 343-403 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Belleville | — |
| 2021-09-22 | 343-404 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Bancroft | — |
| 2021-09-22 | 343-406 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Arden | — |
| 2021-09-22 | 343-407 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Bloomfield | — |
| 2021-09-22 | 343-408 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Brighton | — |
| 2021-09-22 | 343-409 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Cardiff | — |
| 2021-09-22 | 343-410 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Coe Hill | — |
| 2021-09-22 | 343-413 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Frankford | — |
| 2021-09-22 | 343-414 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Madoc | — |
| 2021-09-22 | 343-415 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Gilmour | — |
| 2021-09-22 | 343-416 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Marmora | — |
| 2021-09-22 | 343-418 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Maynooth | — |
| 2021-09-22 | 343-419 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Northbrook | — |
| 2021-09-22 | 343-420 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Picton | — |
| 2021-09-22 | 343-421 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Plevna | — |
| 2021-08-31 | 343-576 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2021-06-21 | 343-628 | not yet reported which blocks → | NRTC Communications | 940D | Eganville | — |
| 2021-03-15 | 343-928 | not yet reported which blocks → | Westport Telephone Company Limited | 920D | Delta | — |
| 2021-02-22 | 343-352 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Cardinal | — |
| 2021-02-22 | 343-569 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Enterprise | — |
| 2021-02-22 | 343-570 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Odessa | — |
| 2021-02-18 | 343-298 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Alfred | — |
| 2020-12-17 | 343-877 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Kemptville | — |
| 2020-12-03 | 343-574 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2020-12-01 | 343-575 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2020-10-16 | 343-209 | not yet reported which blocks → | Videotron Ltd. | 328F | Ottawa-Hull | — |
| 2020-10-15 | 343-464 | not yet reported which blocks → | Fibernetics Corporation | 464D | Almonte | — |
| 2020-10-15 | 343-465 | not yet reported which blocks → | Fibernetics Corporation | 464D | Jockvale | — |
| 2020-10-15 | 343-466 | not yet reported which blocks → | Fibernetics Corporation | 464D | North Gower | — |
| 2020-10-15 | 343-467 | not yet reported which blocks → | Fibernetics Corporation | 464D | Osgoode | — |
| 2020-10-15 | 343-491 | not yet reported which blocks → | Fibernetics Corporation | 464D | Carp | — |
| 2020-10-15 | 343-492 | not yet reported which blocks → | Fibernetics Corporation | 464D | Constance Bay | — |
| 2020-10-15 | 343-493 | not yet reported which blocks → | Fibernetics Corporation | 464D | Pakenham | — |
| 2020-10-15 | 343-895 | not yet reported which blocks → | Fibernetics Corporation | 464D | Casselman | — |
| 2020-10-15 | 343-896 | not yet reported which blocks → | Fibernetics Corporation | 464D | Merrickville | — |
| 2020-10-15 | 343-897 | not yet reported which blocks → | Fibernetics Corporation | 464D | Russell | — |
| 2020-10-15 | 343-898 | not yet reported which blocks → | Fibernetics Corporation | 464D | Winchester | — |
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.