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 905
New assignments by month
Sep 2026
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Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2008-04-11 | 905-636 | not yet reported which blocks → | Bell Canada | 8051 | Milton | — |
| 2005-12-02 | 905-750 | not yet reported which blocks → | Bell Canada | 8051 | Aurora | — |
| 2005-08-30 | 905-532 | not yet reported which blocks → | Bell Canada | 8051 | Thornhill | — |
| 2005-08-17 | 905-913 | not yet reported which blocks → | Bell Canada | 8051 | Castlemore | — |
| 2005-06-29 | 905-614 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| 2005-05-05 | 905-747 | not yet reported which blocks → | Bell Canada | 8051 | Thornhill | — |
| 2004-11-30 | 905-285 | not yet reported which blocks → | Bell Canada | 8051 | Streetsville | — |
| 2004-03-11 | 905-394 | not yet reported which blocks → | Bell Canada | 8051 | Niagara Falls | — |
| 2004-01-06 | 905-970 | not yet reported which blocks → | Bell Canada | 8051 | Brampton | — |
| 2003-11-03 | 905-620 | not yet reported which blocks → | Bell Canada | 8051 | Brooklin | — |
| 2003-07-04 | 905-219 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| 2003-06-20 | 905-444 | not yet reported which blocks → | Bell Canada | 8051 | Whitby | — |
| 2003-05-26 | 905-817 | not yet reported which blocks → | Bell Canada | 8051 | Streetsville | — |
| 2003-05-09 | 905-209 | not yet reported which blocks → | Bell Canada | 8051 | Markham | — |
| 2003-03-28 | 905-491 | not yet reported which blocks → | Bell Canada | 8051 | Clarkson | — |
| 2002-09-27 | 905-287 | not yet reported which blocks → | Bell Canada | 8051 | Oakville | — |
| 2002-01-21 | 905-293 | not yet reported which blocks → | Bell Canada | 8051 | Malton | — |
| 2001-11-19 | 905-861 | not yet reported which blocks → | Bell Canada | 8051 | Brampton | — |
| 2001-09-27 | 905-214 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| 2001-09-27 | 905-495 | not yet reported which blocks → | Bell Canada | 8051 | Brampton | — |
| 2001-09-24 | 905-927 | not yet reported which blocks → | Bell Canada | 8051 | Gormley | — |
| 2001-07-05 | 905-494 | not yet reported which blocks → | Bell Canada | 8051 | Brampton | — |
| 2001-04-23 | 905-982 | not yet reported which blocks → | Bell Canada | 8051 | Port Perry | — |
| 2001-03-30 | 905-952 | not yet reported which blocks → | Bell Canada | 8051 | Newmarket | — |
| 2001-02-19 | 905-413 | not yet reported which blocks → | Bell Canada | 8051 | Unionville | — |
| 2000-11-30 | 905-417 | not yet reported which blocks → | Bell Canada | 8051 | Maple | — |
| 2000-11-23 | 905-977 | not yet reported which blocks → | Bell Canada | 8051 | Hamilton | — |
| 2000-07-19 | 905-967 | not yet reported which blocks → | Bell Canada | 8051 | Newmarket | — |
| 2000-06-28 | 905-286 | not yet reported which blocks → | Bell Canada | 8051 | Streetsville | — |
| 2000-06-28 | 905-751 | not yet reported which blocks → | Bell Canada | 8051 | Aurora | — |
| 2000-03-15 | 905-606 | not yet reported which blocks → | Bell Canada | 8051 | Streetsville | — |
| 2000-02-17 | 905-864 | not yet reported which blocks → | Bell Canada | 8051 | Milton | — |
| 2000-02-03 | 905-696 | not yet reported which blocks → | Bell Canada | 8051 | Malton | — |
| 1999-11-04 | 905-421 | not yet reported which blocks → | Bell Canada | 8051 | South Pickering | — |
| 1999-10-21 | 905-980 | not yet reported which blocks → | Bell Canada | 8051 | St. Catharines-Thorold | — |
| 1999-10-14 | 905-315 | not yet reported which blocks → | Bell Canada | 8051 | Burlington | — |
| — | 905-201 | not yet reported which blocks → | Bell Canada | 8051 | Markham | — |
| — | 905-206 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| — | 905-210 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| — | 905-212 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| — | 905-227 | not yet reported which blocks → | Bell Canada | 8051 | St. Catharines-Thorold | — |
| — | 905-229 | not yet reported which blocks → | Bell Canada | 8051 | Dunnville | — |
| — | 905-238 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| — | 905-257 | not yet reported which blocks → | Bell Canada | 8051 | Oakville | — |
| — | 905-262 | not yet reported which blocks → | Bell Canada | 8051 | Niagara Falls | — |
| — | 905-263 | not yet reported which blocks → | Bell Canada | 8051 | Hampton | — |
| — | 905-264 | not yet reported which blocks → | Bell Canada | 8051 | Woodbridge | — |
| — | 905-265 | not yet reported which blocks → | Bell Canada | 8051 | Woodbridge | — |
| — | 905-270 | not yet reported which blocks → | Bell Canada | 8051 | Cooksville | — |
| — | 905-271 | not yet reported which blocks → | Bell Canada | 8051 | Port Credit | — |
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.