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 |
|---|---|---|---|---|---|---|
| 2015-07-13 | 289-544 | not yet reported which blocks → | Bell Mobility | 6574 | Brampton | — |
| 2015-04-29 | 289-671 | not yet reported which blocks → | Bell Mobility | 6574 | Oshawa | — |
| 2015-01-29 | 289-547 | not yet reported which blocks → | Bell Mobility | 6574 | Niagara Falls | — |
| 2014-06-03 | 289-541 | not yet reported which blocks → | Bell Mobility | 6574 | Brampton | — |
| 2014-06-03 | 289-556 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2014-05-30 | 289-405 | not yet reported which blocks → | Bell Mobility | 6574 | Oshawa | — |
| 2013-10-03 | 289-527 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2012-10-11 | 289-834 | not yet reported which blocks → | Bell Mobility | 6574 | Oakville | — |
| 2011-02-07 | 289-442 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2010-10-05 | 289-219 | not yet reported which blocks → | Bell Mobility | 6574 | St. Catharines-Thorold | — |
| 2010-10-05 | 289-387 | not yet reported which blocks → | Bell Mobility | 6574 | Ajax-Pickering | — |
| 2010-08-06 | 289-383 | not yet reported which blocks → | Bell Mobility | 6574 | Newmarket | — |
| 2010-06-11 | 289-795 | not yet reported which blocks → | Bell Mobility | 6574 | Oakville | — |
| 2010-02-25 | 289-356 | not yet reported which blocks → | Bell Mobility | 6574 | Oshawa | — |
| 2008-10-27 | 289-215 | not yet reported which blocks → | Bell Mobility | 6574 | Cobourg | — |
| 2008-09-19 | 289-214 | not yet reported which blocks → | Bell Mobility | 6574 | St. Catharines-Thorold | — |
| 2008-09-04 | 289-253 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2007-08-09 | 289-355 | not yet reported which blocks → | Bell Mobility | 6574 | Oshawa | — |
| 2007-08-09 | 289-388 | not yet reported which blocks → | Bell Mobility | 6574 | Ajax-Pickering | — |
| 2007-08-09 | 289-441 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2007-08-09 | 289-838 | not yet reported which blocks → | Bell Mobility | 6574 | Oakville | — |
| 2007-01-23 | 289-325 | not yet reported which blocks → | Bell Mobility | 6574 | Brampton | — |
| 2006-06-21 | 289-303 | not yet reported which blocks → | Bell Mobility | 6574 | Fort Erie | — |
| 2006-06-16 | 289-385 | not yet reported which blocks → | Bell Mobility | 6574 | Oshawa | — |
| 2006-04-06 | 289-257 | not yet reported which blocks → | Bell Mobility | 6574 | Niagara Falls | — |
| 2006-03-09 | 289-377 | not yet reported which blocks → | Bell Mobility | 6574 | Dunnville | — |
| 2006-01-18 | 289-440 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2006-01-17 | 289-264 | not yet reported which blocks → | Bell Mobility | 6574 | Newmarket | — |
| 2002-03-12 | 289-439 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2001-08-14 | 289-259 | not yet reported which blocks → | Bell Mobility | 6574 | Oakville | — |
| 2001-08-14 | 289-260 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2001-06-29 | 289-213 | not yet reported which blocks → | Bell Mobility | 6574 | St. Catharines-Thorold | — |
| 2001-06-29 | 289-314 | not yet reported which blocks → | Bell Mobility | 6574 | Ajax-Pickering | — |
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.