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 |
|---|---|---|---|---|---|---|
| 2010-11-02 | 937-799 | 0XXX8XXX9XXX · 3 holders which blocks → | GOLDSTAR COMMUNICATIONS, LLC - OH | 9133 | VERSAILLES | OH |
| 2007-04-05 | 937-639 | 0–9 XXXall 10 · 8 holders which blocks → | GOLDSTAR COMMUNICATIONS, LLC - OH | 9133 | ANNA | OH |
| 2006-08-30 | 937-691 | not yet reported which blocks → | GOLDSTAR COMMUNICATIONS, LLC - OH | 9133 | BOTKINS | OH |
| 2003-05-06 | 937-420 | not yet reported which blocks → | GOLDSTAR COMMUNICATIONS, LLC - OH | 9133 | FT LORAMIE | OH |
| — | 937-575 | not yet reported which blocks → | GOLDSTAR COMMUNICATIONS, LLC - OH | 9133 | SIDNEY | OH |
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.