NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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 905
New assignments by month
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| — | 905-476 | not yet reported which blocks → | Bell Canada | 8051 | Keswick | — |
| — | 905-477 | not yet reported which blocks → | Bell Canada | 8051 | Unionville | — |
| — | 905-478 | not yet reported which blocks → | Bell Canada | 8051 | Queensville | — |
| — | 905-479 | not yet reported which blocks → | Bell Canada | 8051 | Unionville | — |
| — | 905-501 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| — | 905-502 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| — | 905-507 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| — | 905-508 | not yet reported which blocks → | Bell Canada | 8051 | Richmond Hill | — |
| — | 905-509 | not yet reported which blocks → | Bell Canada | 8051 | South Pickering | — |
| — | 905-513 | not yet reported which blocks → | Bell Canada | 8051 | Unionville | — |
| — | 905-520 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-521 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-522 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-523 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-524 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-525 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-526 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-527 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-528 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-529 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-540 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-542 | not yet reported which blocks → | Bell Canada | 8051 | Streetsville | — |
| — | 905-543 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-544 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-545 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-546 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-547 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-548 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-549 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-560 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-561 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-562 | not yet reported which blocks → | Bell Canada | 8051 | Vineland | — |
| — | 905-563 | not yet reported which blocks → | Bell Canada | 8051 | Beamsville | — |
| — | 905-564 | not yet reported which blocks → | Bell Canada | 8051 | Malton | — |
| — | 905-565 | not yet reported which blocks → | Bell Canada | 8051 | Malton | — |
| — | 905-566 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| — | 905-567 | not yet reported which blocks → | Bell Canada | 8051 | Streetsville | — |
| — | 905-568 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| — | 905-569 | not yet reported which blocks → | Bell Canada | 8051 | Streetsville | — |
| — | 905-570 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-571 | not yet reported which blocks → | Bell Canada | 8051 | Oshawa | — |
| — | 905-572 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-573 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-574 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-575 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-576 | not yet reported which blocks → | Bell Canada | 8051 | Oshawa | — |
| — | 905-577 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-578 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| — | 905-579 | not yet reported which blocks → | Bell Canada | 8051 | Oshawa | — |
| — | 905-584 | not yet reported which blocks → | Bell Canada | 8051 | Caledon East | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.