NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/24/2026
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 |
|---|---|---|---|---|---|---|
| — | 440-884 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | VICTORY | OH |
| — | 440-885 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | VICTORY | OH |
| — | 440-886 | 9XXX which blocks → | OHIO BELL TEL CO | 9321 | VICTORY | OH |
| — | 440-887 | 3XXX5XXX which blocks → | OHIO BELL TEL CO | 9321 | VICTORY | OH |
| — | 440-888 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | VICTORY | OH |
| — | 440-891 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | BEREA | OH |
| — | 440-892 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | TRINITY | OH |
| — | 440-893 | 2XXX3XXX5XXX7XXX8XXX which blocks → | OHIO BELL TEL CO | 9321 | CHAGRINFLS | OH |
| — | 440-895 | 7XXX which blocks → | OHIO BELL TEL CO | 9321 | CLEVELAND | OH |
| — | 440-899 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | TRINITY | OH |
| — | 440-914 | 2XXX5XXX · 2 holders which blocks → | OHIO BELL TEL CO | 9321 | CHAGRINFLS | OH |
| — | 440-918 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | WILLOUGHBY | OH |
| — | 440-942 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | WILLOUGHBY | OH |
| — | 440-943 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | WICKLIFFE | OH |
| — | 440-944 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | WICKLIFFE | OH |
| — | 440-946 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | WILLOUGHBY | OH |
| — | 440-951 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | WILLOUGHBY | OH |
| — | 440-953 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | WILLOUGHBY | OH |
| — | 440-954 | 0XXX1XXX2XXX4XXX · 2 holders which blocks → | OHIO BELL TEL CO | 9321 | WILLOUGHBY | OH |
| — | 440-962 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | TRINITY | OH |
| — | 440-974 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | MENTOR | OH |
| — | 440-975 | 6XXX7XXX · 2 holders which blocks → | OHIO BELL TEL CO | 9321 | WILLOUGHBY | OH |
| — | 440-979 | not yet reported which blocks → | OHIO BELL TEL CO | 9321 | TRINITY | OH |
| — | 440-995 | 5XXX8XXX9XXX · 2 holders which blocks → | OHIO BELL TEL CO | 9321 | HILLCREST | OH |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/24/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.