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 |
|---|---|---|---|---|---|---|
| 2012-07-05 | 717-726 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LEWISBERRY | PA |
| — | 717-284 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | RAWLINSVL | PA |
| — | 717-362 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | ELIZABTHVL | PA |
| — | 717-365 | 2XXX5XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | GRATZ | PA |
| — | 717-442 | 3XXX which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | GAP | PA |
| — | 717-453 | 2XXX4XXX5XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LYKENS | PA |
| — | 717-529 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | KIRKWOOD | PA |
| — | 717-548 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | HENSEL | PA |
| — | 717-647 | 5XXX which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | TOWER CITY | PA |
| — | 717-692 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | MILLERSBG | PA |
| — | 717-786 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | QUARRYVL | PA |
| — | 717-806 | 5XXX8XXX which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | QUARRYVL | PA |
| — | 717-915 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LEWISBERRY | PA |
| — | 717-932 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LEWISBERRY | PA |
| — | 717-938 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LEWISBERRY | PA |
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.