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 |
|---|---|---|---|---|---|---|
| 2001-06-29 | 819-578 | not yet reported which blocks → | Bell Mobility | 6574 | Sherbrooke | — |
| 2000-10-27 | 819-692 | not yet reported which blocks → | Bell Mobility | 6574 | Trois-Rivieres | — |
| 2000-08-16 | 819-665 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| 2000-06-09 | 819-350 | not yet reported which blocks → | Bell Mobility | 6574 | Arthabaska | — |
| 2000-06-02 | 819-574 | not yet reported which blocks → | Bell Mobility | 6574 | Sherbrooke | — |
| — | 819-531 | not yet reported which blocks → | Bell Mobility | 6574 | Shawinigan | — |
| — | 819-571 | not yet reported which blocks → | Bell Mobility | 6574 | Sherbrooke | — |
| — | 819-664 | not yet reported which blocks → | Bell Mobility | 6574 | Ottawa-Hull | — |
| — | 819-856 | not yet reported which blocks → | Bell Mobility | 6574 | Val-D'Or | — |
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.