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.
Most active assignees, all time — NPA 343
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 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 | — |
| 2015-09-11 | 343-345 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | South Mountain | — |
| 2015-09-11 | 343-346 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Winchester | — |
| 2015-09-11 | 343-394 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Osgoode | — |
| 2015-09-11 | 343-395 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Pakenham | — |
| 2015-09-11 | 343-396 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Plantagenet | — |
| 2015-09-11 | 343-397 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Richmond | — |
| 2015-09-11 | 343-398 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Rockland | — |
| 2015-09-11 | 343-399 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Russell | — |
| 2015-09-10 | 343-383 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Embrun | — |
| 2015-09-10 | 343-384 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Gloucester | — |
| 2015-09-10 | 343-385 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Jockvale | — |
| 2015-09-10 | 343-386 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Kanata-Stittsville | — |
| 2015-09-10 | 343-387 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Kemptville | — |
| 2015-09-10 | 343-388 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Manotick | — |
| 2015-09-10 | 343-389 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Merrickville | — |
| 2015-09-10 | 343-390 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Metcalfe | — |
| 2015-09-10 | 343-391 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Navan | — |
| 2015-09-10 | 343-392 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | North Gower | — |
| 2015-09-10 | 343-393 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Orleans | — |
| 2015-09-09 | 343-371 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Alfred | — |
| 2015-09-09 | 343-372 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Almonte | — |
| 2015-09-09 | 343-373 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Arnprior | — |
| 2015-09-09 | 343-374 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Bourget | — |
| 2015-09-09 | 343-375 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Carleton Place | — |
| 2015-09-09 | 343-376 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Carp | — |
| 2015-09-09 | 343-377 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Casselman | — |
| 2015-09-09 | 343-378 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Chesterville | — |
| 2015-09-09 | 343-379 | not yet reported which blocks → | TekSavvy Solutions Inc | 548H | Clarence Creek | — |
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.