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 |
|---|---|---|---|---|---|---|
| — | 610-286 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | MORGANTOWN | PA |
| — | 610-367 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | BOYERTOWN | PA |
| — | 610-369 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | BOYERTOWN | PA |
| — | 610-385 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | DOUGLASSVL | PA |
| — | 610-404 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | BIRDSBORO | PA |
| — | 610-473 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | BOYERTOWN | PA |
| — | 610-582 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | BIRDSBORO | PA |
| — | 610-641 | 3XXX which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | TOPTON | PA |
| — | 610-682 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | TOPTON | PA |
| — | 610-689 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | YELLOW HS | PA |
| — | 610-754 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | SASSAMNSVL | PA |
| — | 610-845 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | BALLY | PA |
| — | 610-855 | none assigned yet which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | GREENHILLS | PA |
| — | 610-856 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | GREENHILLS | PA |
| — | 610-913 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | MORGANTOWN | PA |
| — | 610-987 | not yet reported which blocks → | WINDSTREAM CONESTOGA, INC. | 0162 | OLEY | 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.