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 |
|---|---|---|---|---|---|---|
| 2020-02-21 | 234-269 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | HUDSON | OH |
| 2015-07-31 | 234-781 | 7XXX8XXX9XXX · 3 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | AURORA | OH |
| 2015-01-15 | 234-409 | 0XXX3XXX4XXX5XXX6XXX7XXX · 3 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | SPENCER | OH |
| 2014-05-14 | 234-319 | 0–9 XXXall 10 · 4 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | GREENSBURG | OH |
| 2014-05-14 | 234-404 | 0–9 XXXall 10 · 5 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | ROOTSTOWN | OH |
| 2014-05-14 | 234-978 | 0–9 XXXall 10 · 6 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | HARTVILLE | OH |
| 2014-05-14 | 234-980 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX9XXX · 5 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | MARLBORO | OH |
| 2014-01-16 | 234-706 | 0–9 XXXall 10 · 6 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | AKRON | OH |
| 2013-07-26 | 234-308 | 0–9 XXXall 10 · 5 holders which blocks → | CENTURYLINK COMMUNICATIONS, LLC | 508J | WARREN | 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.