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 |
|---|---|---|---|---|---|---|
| 2024-01-08 | 343-660 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2023-09-08 | 343-631 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2023-05-16 | 343-630 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2022-12-06 | 343-598 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2022-10-04 | 343-596 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2022-07-21 | 343-597 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2021-08-31 | 343-576 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 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 | — |
| 2020-10-14 | 343-573 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2020-03-27 | 343-571 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2020-03-27 | 343-572 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2020-02-13 | 343-553 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2020-01-08 | 343-552 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2018-08-14 | 343-551 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2018-07-19 | 343-549 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2018-07-19 | 343-550 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2018-05-08 | 343-548 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2018-04-11 | 343-543 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2016-01-28 | 343-542 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2016-01-28 | 343-544 | not yet reported which blocks → | Bell Mobility | 6574 | Pembroke | — |
| 2015-11-24 | 343-585 | not yet reported which blocks → | Bell Mobility | 6574 | Cornwall | — |
| 2015-08-20 | 343-285 | not yet reported which blocks → | Bell Mobility | 6574 | Carleton Place | — |
| 2015-08-10 | 343-327 | not yet reported which blocks → | Bell Mobility | 6574 | Brockville | — |
| 2015-07-13 | 343-422 | not yet reported which blocks → | Bell Mobility | 6574 | Kingston | — |
| 2015-04-29 | 343-541 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2015-01-14 | 343-645 | not yet reported which blocks → | Bell Mobility | 6574 | Belleville | — |
| 2014-05-30 | 343-540 | not yet reported which blocks → | Bell Mobility | 6574 | 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.