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
Sep 2026
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2012-09-18 | 438-765 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2012-08-28 | 438-844 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2012-08-17 | 438-495 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2012-07-30 | 438-265 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Pointe-Claire | — |
| 2012-07-25 | 438-934 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2012-06-22 | 438-969 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| 2012-06-22 | 438-980 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| 2012-06-22 | 438-981 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| 2012-06-22 | 438-982 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| 2012-06-22 | 438-983 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| 2012-06-22 | 438-984 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| 2012-06-22 | 438-985 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Montreal | — |
| 2012-06-18 | 438-932 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2012-06-08 | 438-382 | not yet reported which blocks → | Videotron Ltd. | 8306 | Montreal | — |
| 2012-06-08 | 438-494 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2012-05-29 | 438-931 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2012-05-02 | 438-792 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-05-02 | 438-793 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-05-02 | 438-794 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-05-02 | 438-795 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-05-02 | 438-796 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-04-12 | 438-500 | not yet reported which blocks → | Iristel Inc. | 154E | Pointe-Claire | — |
| 2012-04-04 | 438-264 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Lachine | — |
| 2012-04-04 | 438-797 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-04-04 | 438-798 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-04-04 | 438-799 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-03-20 | 438-738 | not yet reported which blocks → | Fibernetics Corporation | 464D | Montreal | — |
| 2012-03-20 | 438-818 | not yet reported which blocks → | Fibernetics Corporation | 464D | Ste-Genevieve | — |
| 2012-03-20 | 438-819 | not yet reported which blocks → | Fibernetics Corporation | 464D | Lachine | — |
| 2012-03-19 | 438-700 | not yet reported which blocks → | Iristel Inc. | 154E | Ile-Perrot | — |
| 2012-03-09 | 438-538 | not yet reported which blocks → | Fibernetics Corporation | 464D | Pointe-Claire | — |
| 2012-03-09 | 438-638 | not yet reported which blocks → | Fibernetics Corporation | 464D | Ile-Perrot | — |
| 2012-03-01 | 438-388 | not yet reported which blocks → | Fibernetics Corporation | 464D | Montreal | — |
| 2012-02-27 | 438-813 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-02-27 | 438-814 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-02-27 | 438-815 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-02-27 | 438-816 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-02-27 | 438-817 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2012-02-01 | 438-491 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2012-02-01 | 438-492 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2012-01-24 | 438-930 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2011-12-01 | 438-808 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2011-12-01 | 438-809 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2011-12-01 | 438-812 | not yet reported which blocks → | Iristel Inc. | 154E | Montreal | — |
| 2011-11-04 | 438-476 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Montreal | — |
| 2011-11-04 | 438-477 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Montreal | — |
| 2011-11-04 | 438-478 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Montreal | — |
| 2011-11-04 | 438-479 | not yet reported which blocks → | ISP Telecom Inc. | 448K | Montreal | — |
| 2011-10-21 | 438-935 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2011-10-11 | 438-896 | not yet reported which blocks → | Distributel | 083E | 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.