NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 |
|---|---|---|---|---|---|---|
| — | 570-744 | 4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LE RAYSVL | PA |
| — | 570-746 | 5XXX which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | WYALUSING | PA |
| — | 570-788 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | CNYNGHDRMS | PA |
| — | 570-827 | 5XXX7XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LAWRENCEVL | PA |
| — | 570-833 | 7XXX8XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | MEHOOPANY | PA |
| — | 570-835 | 2XXX3XXX8XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | TIOGA | PA |
| — | 570-836 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | TUNKHANNCK | PA |
| — | 570-853 | 1XXX6XXX7XXX8XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | SUSQUHANNA | PA |
| — | 570-864 | 1XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | HUNTIGTNML | PA |
| — | 570-868 | 1XXX2XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | NUANGOLA | PA |
| — | 570-869 | 4XXX5XXX6XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LACEYVILLE | PA |
| — | 570-879 | 1XXX3XXX7XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | HALLSTEAD | PA |
| — | 570-889 | 1XXX which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | RINGTOWN | PA |
| — | 570-897 | 1XXX3XXX4XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | PORTLAND | PA |
| — | 570-924 | 2XXX6XXX7XXX8XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | ESTELLA | PA |
| — | 570-925 | 3XXX4XXX8XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | BENTON | PA |
| — | 570-928 | 3XXX4XXX5XXX6XXX · 4 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | DUSHORE | PA |
| — | 570-934 | 1XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | RUSH | PA |
| — | 570-942 | 1XXX2XXX3XXX5XXX7XXX8XXX · 6 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | NICHOLSON | PA |
| — | 570-945 | 1XXX2XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | FACTORYVL | PA |
| — | 570-946 | 1XXX2XXX3XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LAPORTE | PA |
| — | 570-965 | 4XXX5XXX7XXX · 2 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | SPRINGVL | PA |
| — | 570-967 | 3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | LAWSVILLE | PA |
| — | 570-992 | not yet reported which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | SAYLORSBG | PA |
| — | 570-996 | 3XXX6XXX7XXX · 3 holders which blocks → | COMMONWEALTH TELEPHONE COMPANY LLC | 0161 | TUNKHANNCK | PA |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.