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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2025-09-10 | 438-954 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2025-06-25 | 438-953 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2025-04-04 | 438-952 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2022-11-21 | 438-842 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2020-05-14 | 438-945 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2020-05-14 | 438-946 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2020-05-13 | 438-943 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2020-05-13 | 438-944 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2020-01-31 | 438-942 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2017-09-28 | 438-940 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2013-11-18 | 438-843 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2012-08-28 | 438-844 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2010-09-07 | 438-890 | not yet reported which blocks → | TELUS Quebec | 2243 | Ile-Perrot | — |
| 2010-09-07 | 438-891 | not yet reported which blocks → | TELUS Quebec | 2243 | Lachine | — |
| 2010-09-07 | 438-892 | not yet reported which blocks → | TELUS Quebec | 2243 | Montreal | — |
| 2010-09-07 | 438-893 | not yet reported which blocks → | TELUS Quebec | 2243 | Pointe-Claire | — |
| 2010-09-07 | 438-894 | not yet reported which blocks → | TELUS Quebec | 2243 | Roxboro | — |
| 2010-09-07 | 438-895 | not yet reported which blocks → | TELUS Quebec | 2243 | Ste-Genevieve | — |
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.