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 |
|---|---|---|---|---|---|---|
| — | 712-353 | 0XXX7XXX · 2 holders which blocks → | WESTERN IOWA TEL. ASSN. | 1334 | CASTANA | IA |
| — | 712-827 | 0XXX7XXX which blocks → | WESTERN IOWA TEL. ASSN. | 1334 | OTO | IA |
| — | 712-873 | 7XXX8XXX · 2 holders which blocks → | WESTERN IOWA TEL. ASSN. | 1334 | MOVILLE | IA |
| — | 712-874 | 7XXX which blocks → | WESTERN IOWA TEL. ASSN. | 1334 | HORNICK | IA |
| — | 712-876 | 0XXX7XXX · 2 holders which blocks → | WESTERN IOWA TEL. ASSN. | 1334 | CLIMBINGHL | IA |
| — | 712-889 | 0XXX7XXX · 2 holders which blocks → | WESTERN IOWA TEL. ASSN. | 1334 | SMITHLAND | IA |
| — | 712-944 | 0XXX7XXX · 2 holders which blocks → | WESTERN IOWA TEL. ASSN. | 1334 | LAWTON | IA |
| — | 712-948 | 0XXX7XXX · 2 holders which blocks → | WESTERN IOWA TEL. ASSN. | 1334 | BRONSON | IA |
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.