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 438
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2026-07-20 | 438-235 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2026-07-20 | 438-253 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2026-06-29 | 438-219 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2026-06-29 | 438-234 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2025-03-28 | 438-673 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2025-02-20 | 438-672 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2025-01-29 | 438-671 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2024-06-17 | 438-314 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2024-01-29 | 438-670 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2024-01-08 | 438-443 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-12-04 | 438-446 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-12-04 | 438-449 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-11-13 | 438-581 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-11-09 | 438-578 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-09-19 | 438-535 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-09-13 | 438-451 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-09-08 | 438-454 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-08-01 | 438-453 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-05-16 | 438-470 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-05-16 | 438-576 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2023-05-03 | 438-575 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-12-06 | 438-468 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-10-26 | 438-467 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-09-14 | 438-574 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-07-21 | 438-466 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-05-12 | 438-573 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-05-05 | 438-572 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-04-28 | 438-571 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-03-23 | 438-570 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-02-18 | 438-598 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-02-16 | 438-597 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-02-15 | 438-596 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-02-14 | 438-465 | not yet reported which blocks → | Bell Mobility | 6574 | Montreal | — |
| 2022-02-14 | 438-650 | not yet reported which blocks → | Bell Mobility | 6574 | 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 | — |
| 2021-07-02 | 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 | — |
| 2021-04-23 | 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 | — |
| 2021-03-24 | 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 | — |
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.