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 |
|---|---|---|---|---|---|---|
| 2014-03-03 | 289-403 | not yet reported which blocks → | Bell Canada | 8051 | Ajax-Pickering | — |
| 2014-03-03 | 289-657 | not yet reported which blocks → | Bell Canada | 8051 | Woodbridge | — |
| 2013-05-17 | 289-851 | not yet reported which blocks → | Bell Canada | 8051 | Milton | — |
| 2013-01-23 | 289-443 | not yet reported which blocks → | Bell Canada | 8051 | Ancaster | — |
| 2012-12-21 | 289-386 | not yet reported which blocks → | Bell Canada | 8051 | Oakville | — |
| 2012-08-02 | 289-725 | not yet reported which blocks → | Bell Canada | 8051 | Oakville | — |
| 2010-03-18 | 289-305 | not yet reported which blocks → | Bell Canada | 8051 | Streetsville | — |
| 2008-11-23 | 289-304 | not yet reported which blocks → | Bell Canada | 8051 | Maple | — |
| 2008-06-06 | 289-261 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| 2007-09-14 | 289-649 | not yet reported which blocks → | Bell Canada | 8051 | Winona | — |
| 2006-11-27 | 289-313 | not yet reported which blocks → | Bell Canada | 8051 | Burlington | — |
| 2006-09-05 | 289-562 | not yet reported which blocks → | Bell Canada | 8051 | Malton | — |
| 2006-01-11 | 289-333 | not yet reported which blocks → | Bell Canada | 8051 | Unionville | — |
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.