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 |
|---|---|---|---|---|---|---|
| 2001-05-04 | 402-886 | 7XXX which blocks → | HAMILTON TEL. CO. | 1555 | PHILLIPS | NE |
| — | 402-631 | none assigned yet which blocks → | HAMILTON TEL. CO. | 1555 | AURORA | NE |
| — | 402-694 | not yet reported which blocks → | HAMILTON TEL. CO. | 1555 | AURORA | NE |
| — | 402-725 | none assigned yet which blocks → | HAMILTON TEL. CO. | 1555 | HAMPTON | NE |
| — | 402-737 | none assigned yet which blocks → | HAMILTON TEL. CO. | 1555 | STOCKHAM | NE |
| — | 402-743 | 9XXX which blocks → | HAMILTON TEL. CO. | 1555 | TRUMBULL | NE |
| — | 402-757 | 5XXX which blocks → | HAMILTON TEL. CO. | 1555 | HORDVILLE | NE |
| — | 402-845 | 1XXX3XXX8XXX · 2 holders which blocks → | HAMILTON TEL. CO. | 1555 | DONIPHAN | NE |
| — | 402-849 | none assigned yet which blocks → | HAMILTON TEL. CO. | 1555 | GILTNER | NE |
| — | 402-854 | 5XXX which blocks → | HAMILTON TEL. CO. | 1555 | MARQUETTE | NE |
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.