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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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2004-10-13 | 905-865 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2004-10-13 | 905-981 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2004-10-12 | 905-207 | not yet reported which blocks → | TELUS Mobility | 8303 | Cobourg | — |
| 2004-10-01 | 905-622 | not yet reported which blocks → | TELUS Mobility | 8303 | Ajax-Pickering | — |
| 2004-09-27 | 905-230 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Brampton | — |
| 2004-09-27 | 905-232 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Cooksville | — |
| 2004-09-27 | 905-237 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Richmond Hill | — |
| 2004-09-27 | 905-239 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Ajax-Pickering | — |
| 2004-09-27 | 905-240 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Oshawa | — |
| 2004-08-24 | 905-904 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Uxbridge | — |
| 2004-08-05 | 905-418 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Thornhill | — |
| 2004-08-05 | 905-917 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Unionville | — |
| 2004-08-03 | 905-225 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | St. Catharines-Thorold | — |
| 2004-08-03 | 905-412 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Streetsville | — |
| 2004-07-30 | 905-215 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Oshawa | — |
| 2004-07-30 | 905-234 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Malton | — |
| 2004-07-29 | 905-247 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Cooksville | — |
| 2004-07-29 | 905-291 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Brampton | — |
| 2004-07-29 | 905-538 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Hamilton | — |
| 2004-07-22 | 905-582 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Oakville | — |
| 2004-06-07 | 905-746 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2004-05-19 | 905-910 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Markham | — |
| 2004-05-19 | 905-918 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Richmond Hill | — |
| 2004-04-19 | 905-233 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Oshawa | — |
| 2004-03-15 | 905-235 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 743B | Newmarket | — |
| 2004-03-11 | 905-394 | not yet reported which blocks → | Bell Canada | 8051 | Niagara Falls | — |
| 2004-02-05 | 905-739 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Thornhill | — |
| 2004-01-19 | 905-635 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Burlington | — |
| 2004-01-06 | 905-970 | not yet reported which blocks → | Bell Canada | 8051 | Brampton | — |
| 2003-12-24 | 905-807 | not yet reported which blocks → | TELUS Mobility | 8303 | Hamilton | — |
| 2003-12-01 | 905-241 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Cooksville | — |
| 2003-11-17 | 905-870 | not yet reported which blocks → | Bell Mobility | 6574 | Hamilton | — |
| 2003-11-03 | 905-620 | not yet reported which blocks → | Bell Canada | 8051 | Brooklin | — |
| 2003-10-21 | 905-218 | not yet reported which blocks → | Primus Telecommunications Canada Inc. | 201A | Hamilton | — |
| 2003-10-10 | 905-288 | not yet reported which blocks → | TELUS Integrated Communications | 2782 | Streetsville | — |
| 2003-10-01 | 905-231 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Ajax-Pickering | — |
| 2003-10-01 | 905-250 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | South Pickering | — |
| 2003-10-01 | 905-486 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Port Credit | — |
| 2003-10-01 | 905-556 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Whitby | — |
| 2003-10-01 | 905-919 | not yet reported which blocks → | Rogers Communications Canada Inc. (Cable) | 8377 | Clarkson | — |
| 2003-09-30 | 905-409 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Ajax-Pickering | — |
| 2003-09-29 | 905-401 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | St. Catharines-Thorold | — |
| 2003-09-29 | 905-906 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Hamilton | — |
| 2003-09-23 | 905-407 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Burlington | — |
| 2003-07-25 | 905-244 | not yet reported which blocks → | Bell Mobility | 6574 | Oshawa | — |
| 2003-07-25 | 905-483 | not yet reported which blocks → | Bell Mobility | 6574 | Oakville | — |
| 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 | — |
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.