NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/21/2026
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 |
|---|---|---|---|---|---|---|
| — | 519-923 | not yet reported which blocks → | Bell Canada | 8051 | Dundalk | — |
| — | 519-924 | not yet reported which blocks → | Bell Canada | 8051 | Flesherton | — |
| — | 519-925 | not yet reported which blocks → | Bell Canada | 8051 | Shelburne | — |
| — | 519-927 | not yet reported which blocks → | Bell Canada | 8051 | Caledon | — |
| — | 519-928 | not yet reported which blocks → | Bell Canada | 8051 | Grand Valley | — |
| — | 519-934 | not yet reported which blocks → | Bell Canada | 8051 | Tara | — |
| — | 519-935 | not yet reported which blocks → | Bell Canada | 8051 | Hepworth | — |
| — | 519-938 | not yet reported which blocks → | Bell Canada | 8051 | Orangeville | — |
| — | 519-939 | not yet reported which blocks → | Bell Canada | 8051 | Orangeville | — |
| — | 519-940 | not yet reported which blocks → | Bell Canada | 8051 | Orangeville | — |
| — | 519-941 | not yet reported which blocks → | Bell Canada | 8051 | Orangeville | — |
| — | 519-942 | not yet reported which blocks → | Bell Canada | 8051 | Orangeville | — |
| — | 519-944 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-945 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-948 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-966 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-967 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-969 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-971 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-972 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-973 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-974 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-975 | not yet reported which blocks → | Bell Canada | 8051 | Woodslee | — |
| — | 519-977 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-978 | not yet reported which blocks → | Bell Canada | 8051 | La Salle | — |
| — | 519-979 | not yet reported which blocks → | Bell Canada | 8051 | Tecumseh | — |
| — | 519-983 | not yet reported which blocks → | Bell Canada | 8051 | Tillsonburg | — |
| — | 519-985 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-986 | not yet reported which blocks → | Bell Canada | 8051 | Markdale | — |
| — | 519-987 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
| — | 519-988 | not yet reported which blocks → | Bell Canada | 8051 | Windsor | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/21/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.