NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
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 |
|---|---|---|---|---|---|---|
| 2010-01-26 | 513-402 | 0–9 XXXall 10 · 8 holders which blocks → | PAETEC ITEL, LLC | 829J | MONROE | OH |
| 2006-04-26 | 513-488 | 0–9 XXXall 10 · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | CINCINNATI | OH |
| — | 513-201 | 3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | CLERMONT | OH |
| — | 513-332 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | PAETEC ITEL, LLC | 829J | CINCINNATI | OH |
| — | 513-433 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | MIDDLETOWN | OH |
| — | 513-434 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | REILY | OH |
| — | 513-436 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | WILLIAMSBG | OH |
| — | 513-437 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | SEVEN MILE | OH |
| — | 513-447 | 0XXX1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | SHANDON | OH |
| — | 513-452 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | HARRISON | OH |
| — | 513-453 | 2XXX3XXX4XXX5XXX6XXX7XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | LTL MIAMI | OH |
| — | 513-454 | 4XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | HAMILTON | OH |
| — | 513-456 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | NEWTONSVL | OH |
| — | 513-457 | 0XXX1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | BETHEL | OH |
| — | 513-463 | 1XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | BETHANY | OH |
| — | 513-842 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | CINCINNATI | OH |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.