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 |
|---|---|---|---|---|---|---|
| 2004-09-16 | 731-256 | 0–9 XXXall 10 · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| 2001-12-05 | 731-951 | 1XXX3XXX4XXX5XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| — | 731-249 | 0XXX4XXX5XXX7XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | LEXINGTON | TN |
| — | 731-281 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | MARTIN | TN |
| — | 731-341 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | DRESDEN | TN |
| — | 731-389 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | UNION CITY | TN |
| — | 731-407 | 0XXX4XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | PARIS | TN |
| — | 731-410 | 4XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| — | 731-453 | 0XXX4XXX5XXX6XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | SELMER | TN |
| — | 731-461 | 4XXX5XXX6XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ALAMO | TN |
| — | 731-468 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | CAMDEN | TN |
| — | 731-470 | 0XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | TRENTON | TN |
| — | 731-478 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | DYERSBURG | TN |
| — | 731-518 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | BOLIVAR | TN |
| — | 731-519 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | BROWNSVL | TN |
| — | 731-595 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | HENDERSON | TN |
| — | 731-623 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 7 holders which blocks → | PAETEC ITEL, LLC | 829J | TIPTONVL | TN |
| — | 731-633 | 1XXX2XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | JACKSON | TN |
| — | 731-671 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | RIPLEY | TN |
| — | 731-727 | 0XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | SAVANNAH | TN |
| — | 731-792 | 4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | HUNTINGDON | TN |
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.