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 438
New assignments by month
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2014-11-24 | 438-771 | not yet reported which blocks → | Fibernetics Corporation | 464D | Montreal | — |
| 2014-11-24 | 438-772 | not yet reported which blocks → | Fibernetics Corporation | 464D | Roxboro | — |
| 2014-10-01 | 438-349 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2014-10-01 | 438-350 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2014-10-01 | 438-351 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2014-10-01 | 438-352 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2014-10-01 | 438-353 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2014-10-01 | 438-354 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2014-10-01 | 438-666 | not yet reported which blocks → | InnSysVoice Corp | 383H | Montreal | — |
| 2014-08-26 | 438-259 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Montreal | — |
| 2014-08-21 | 438-387 | not yet reported which blocks → | Videotron Ltd. | 8306 | Montreal | — |
| 2014-08-19 | 438-239 | not yet reported which blocks → | Fibernetics Corporation | 464D | Montreal | — |
| 2014-08-12 | 438-845 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2014-07-03 | 438-452 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2014-06-23 | 438-346 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2014-06-23 | 438-347 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2014-06-23 | 438-348 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2014-06-17 | 438-403 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2014-06-17 | 438-404 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2014-04-07 | 438-399 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2014-02-11 | 438-788 | not yet reported which blocks → | Fibernetics Corporation | 464D | Montreal | — |
| 2014-01-24 | 438-345 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2013-12-03 | 438-558 | not yet reported which blocks → | Fibernetics Corporation | 464D | Montreal | — |
| 2013-11-18 | 438-843 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2013-11-11 | 438-496 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2013-11-11 | 438-497 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2013-10-17 | 438-600 | not yet reported which blocks → | Iristel Inc. | 154E | Lachine | — |
| 2013-09-10 | 438-301 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2013-08-01 | 438-464 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Montreal | — |
| 2013-07-30 | 438-926 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Montreal | — |
| 2013-07-30 | 438-927 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Montreal | — |
| 2013-07-30 | 438-928 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Montreal | — |
| 2013-07-30 | 438-929 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Montreal | — |
| 2013-06-14 | 438-228 | not yet reported which blocks → | Fibernetics Corporation | 464D | Montreal | — |
| 2013-03-08 | 438-222 | not yet reported which blocks → | Beanfield Technologies Inc. | 575G | Montreal | — |
| 2013-03-05 | 438-488 | not yet reported which blocks → | Fibernetics Corporation | 464D | Montreal | — |
| 2013-02-22 | 438-397 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2013-02-22 | 438-398 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2013-02-08 | 438-374 | not yet reported which blocks → | Videotron Ltd. | 8306 | Montreal | — |
| 2013-02-05 | 438-266 | not yet reported which blocks → | Comwave Networks | 160G | Montreal | — |
| 2013-01-30 | 438-948 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2012-12-24 | 438-968 | not yet reported which blocks → | Distributel | 083E | Montreal | — |
| 2012-12-20 | 438-448 | not yet reported which blocks → | Fibernetics Corporation | 464D | Montreal | — |
| 2012-11-30 | 438-258 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Montreal | — |
| 2012-11-30 | 438-588 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2012-11-07 | 438-763 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2012-10-29 | 438-383 | not yet reported which blocks → | Videotron Ltd. | 8306 | Montreal | — |
| 2012-10-29 | 438-384 | not yet reported which blocks → | Videotron Ltd. | 8306 | Montreal | — |
| 2012-10-29 | 438-385 | not yet reported which blocks → | Videotron Ltd. | 8306 | Montreal | — |
| 2012-10-29 | 438-386 | not yet reported which blocks → | Videotron Ltd. | 8306 | Montreal | — |
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.