NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 289
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 |
|---|---|---|---|---|---|---|
| 2014-12-03 | 289-598 | not yet reported which blocks → | TELUS Mobility | 8303 | Burlington | — |
| 2014-11-26 | 289-591 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| 2013-07-29 | 289-654 | not yet reported which blocks → | TELUS Mobility | 8303 | Brampton | — |
| 2012-05-25 | 289-995 | not yet reported which blocks → | TELUS Mobility | 8303 | Aurora | — |
| 2012-05-15 | 289-931 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2012-05-15 | 289-996 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| 2012-04-20 | 289-934 | not yet reported which blocks → | TELUS Mobility | 8303 | Newmarket | — |
| 2011-10-28 | 289-675 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| 2011-10-28 | 289-691 | not yet reported which blocks → | TELUS Mobility | 8303 | Cobourg | — |
| 2011-09-16 | 289-455 | not yet reported which blocks → | TELUS Mobility | 8303 | Grimsby | — |
| 2011-09-13 | 289-698 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2011-03-01 | 289-423 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| 2011-02-07 | 289-930 | not yet reported which blocks → | TELUS Mobility | 8303 | Milton | — |
| 2011-02-07 | 289-935 | not yet reported which blocks → | TELUS Mobility | 8303 | Georgetown | — |
| 2010-12-21 | 289-354 | not yet reported which blocks → | TELUS Mobility | 8303 | Port Perry | — |
| 2010-11-30 | 289-716 | not yet reported which blocks → | TELUS Mobility | 8303 | Newmarket | — |
| 2010-11-24 | 289-690 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2010-11-24 | 289-696 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2010-11-24 | 289-697 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2010-11-15 | 289-682 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2010-11-15 | 289-683 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2010-10-15 | 289-684 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2010-10-15 | 289-685 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| 2010-10-04 | 289-681 | not yet reported which blocks → | TELUS Mobility | 8303 | Oakville | — |
| 2010-08-31 | 289-933 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2010-08-31 | 289-938 | not yet reported which blocks → | TELUS Mobility | 8303 | Burlington | — |
| 2010-08-31 | 289-939 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| 2010-08-26 | 289-993 | not yet reported which blocks → | TELUS Mobility | 8303 | Oakville | — |
| 2010-06-04 | 289-988 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| 2010-02-18 | 289-230 | not yet reported which blocks → | TELUS Mobility | 8303 | Burlington | — |
| 2009-09-01 | 289-233 | not yet reported which blocks → | TELUS Mobility | 8303 | Brampton | — |
| 2009-07-31 | 289-879 | not yet reported which blocks → | TELUS Mobility | 8303 | Aurora | — |
| 2009-04-30 | 289-680 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2009-01-26 | 289-987 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| 2009-01-23 | 289-687 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2008-10-30 | 289-456 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2008-06-02 | 289-880 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2008-04-08 | 289-686 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
| 2006-11-02 | 289-839 | not yet reported which blocks → | TELUS Mobility | 8303 | Georgetown | — |
| 2006-08-01 | 289-899 | not yet reported which blocks → | TELUS Mobility | 8303 | Beeton | — |
| 2006-01-24 | 289-688 | not yet reported which blocks → | TELUS Mobility | 8303 | Oshawa | — |
| 2006-01-24 | 289-808 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2005-10-21 | 289-228 | not yet reported which blocks → | TELUS Mobility | 8303 | St. Catharines-Thorold | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.