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
Aug 2026
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May 2026
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Dec 2025
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Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2021-12-10 | 438-372 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2021-12-10 | 438-541 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2021-10-22 | 438-376 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2021-10-13 | 438-864 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2021-10-13 | 438-865 | not yet reported which blocks → | TELUS Mobility | 8303 | Montreal | — |
| 2021-09-17 | 438-463 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-09-15 | 438-462 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-08-09 | 438-702 | not yet reported which blocks → | Iristel Inc. | 154E | Ile-Perrot | — |
| 2021-08-06 | 438-609 | not yet reported which blocks → | Iristel Inc. | 154E | Lachine | — |
| 2021-07-27 | 438-237 | not yet reported which blocks → | Fibernetics Corporation | 464D | Pointe-Claire | — |
| 2021-07-20 | 438-769 | not yet reported which blocks → | Fibernetics Corporation | 464D | Montreal | — |
| 2021-07-02 | 438-595 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-06-28 | 438-594 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-05-05 | 438-224 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Montreal | — |
| 2021-05-05 | 438-424 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Montreal | — |
| 2021-05-05 | 438-447 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Pointe-Claire | — |
| 2021-05-05 | 438-608 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Ste-Genevieve | — |
| 2021-05-05 | 438-644 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Montreal | — |
| 2021-05-05 | 438-677 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Roxboro | — |
| 2021-05-04 | 438-577 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Lachine | — |
| 2021-05-04 | 438-599 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Ile-Perrot | — |
| 2021-04-23 | 438-569 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-04-22 | 438-568 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-04-21 | 438-567 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-04-07 | 438-528 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2021-03-26 | 438-373 | not yet reported which blocks → | Videotron Ltd. | 328F | Montreal | — |
| 2021-03-24 | 438-593 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-03-23 | 438-592 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-03-15 | 438-591 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-03-08 | 438-262 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-03-08 | 438-590 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-02-23 | 438-261 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-02-03 | 438-419 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-02-03 | 438-566 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-01-21 | 438-249 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-01-19 | 438-247 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-01-15 | 438-260 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Montreal | — |
| 2021-01-07 | 438-418 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-01-07 | 438-565 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-01-04 | 438-417 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2021-01-04 | 438-564 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2020-12-30 | 438-416 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2020-12-30 | 438-563 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2020-12-29 | 438-415 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2020-12-24 | 438-414 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2020-12-24 | 438-561 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2020-12-24 | 438-562 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2020-12-09 | 438-413 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2020-12-09 | 438-560 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2020-12-08 | 438-412 | not yet reported which blocks → | Bell Mobility | 6574 | 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.