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 |
|---|---|---|---|---|---|---|
| 2015-07-22 | 819-927 | not yet reported which blocks → | Comwave Networks | 160G | Magog | — |
| 2013-12-10 | 819-957 | not yet reported which blocks → | Comwave Networks | 160G | Ottawa-Hull | — |
| 2013-12-06 | 819-901 | not yet reported which blocks → | Comwave Networks | 160G | Fort-Coulonge | — |
| 2013-12-06 | 819-902 | not yet reported which blocks → | Comwave Networks | 160G | Gracefield | — |
| 2013-12-06 | 819-906 | not yet reported which blocks → | Comwave Networks | 160G | Grand-Remous | — |
| 2013-12-06 | 819-972 | not yet reported which blocks → | Comwave Networks | 160G | Kazabazua | — |
| 2013-12-06 | 819-973 | not yet reported which blocks → | Comwave Networks | 160G | Maniwaki | — |
| 2013-06-24 | 819-512 | not yet reported which blocks → | Comwave Networks | 160G | St-Felix-de-Kingsey | — |
| 2013-06-24 | 819-590 | not yet reported which blocks → | Comwave Networks | 160G | Danville | — |
| 2013-06-24 | 819-910 | not yet reported which blocks → | Comwave Networks | 160G | Lac-Megantic | — |
| 2013-06-24 | 819-912 | not yet reported which blocks → | Comwave Networks | 160G | Richmond | — |
| 2013-06-24 | 819-969 | not yet reported which blocks → | Comwave Networks | 160G | Sherbrooke | — |
| 2013-06-24 | 819-970 | not yet reported which blocks → | Comwave Networks | 160G | South Durham | — |
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.