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.
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 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 | — |
| 2019-04-23 | 438-444 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Montreal | — |
| 2017-09-25 | 438-248 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Ste-Genevieve | — |
| 2017-09-25 | 438-428 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Ile-Perrot | — |
| 2017-09-25 | 438-618 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Pointe-Claire | — |
| 2017-09-25 | 438-648 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Lachine | — |
| 2017-09-25 | 438-688 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Montreal | — |
| 2017-09-25 | 438-748 | not yet reported which blocks → | IXICA Communications Inc. | 812H | Roxboro | — |
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.