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 |
|---|---|---|---|---|---|---|
| 2008-11-03 | 404-333 | 0–9 XXXall 10 · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| 2005-11-14 | 404-474 | 0–9 XXXall 10 · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-214 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-389 | 2XXX3XXX5XXX6XXX7XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-419 | 7XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-477 | 4XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-554 | 2XXX3XXX5XXX6XXX7XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-564 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-781 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-832 | 0XXX5XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-844 | 1XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-917 | 3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
| — | 404-969 | 2XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA | GA |
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.