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 |
|---|---|---|---|---|---|---|
| 2001-03-20 | 339-200 | 7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | HINGHAM | MA |
| 2001-03-20 | 339-502 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | CANTON | MA |
| 2001-03-20 | 339-532 | 0XXX1XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | REVERE | MA |
| 2001-03-20 | 339-600 | 1XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | SAUGUS | MA |
| 2001-03-20 | 339-613 | 7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | NORWELL | MA |
| 2001-03-20 | 339-674 | 0XXX1XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | PAETEC ITEL, LLC | 829J | MEDFORD | MA |
| 2001-03-20 | 339-686 | 7XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | WELLESLEY | MA |
| 2001-03-20 | 339-707 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | ARLINGTON | MA |
| 2001-03-20 | 339-883 | 7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | LYNN | MA |
| 2001-03-19 | 339-293 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | MELROSE | MA |
| 2001-03-19 | 339-499 | 0XXX1XXX2XXX3XXX4XXX5XXX7XXX8XXX9XXX · 6 holders which blocks → | PAETEC ITEL, LLC | 829J | WEYMOUTH | MA |
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.