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 |
|---|---|---|---|---|---|---|
| — | 770-255 | 8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-257 | 7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NW | GA |
| — | 770-274 | 8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-278 | 7XXX8XXX which blocks → | PAETEC ITEL, LLC | 829J | CONYERS | GA |
| — | 770-293 | 7XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NW | GA |
| — | 770-295 | 8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-302 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA SO | GA |
| — | 770-305 | 7XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA SO | GA |
| — | 770-320 | 7XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA SO | GA |
| — | 770-342 | 8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-344 | 7XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-347 | 7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA SO | GA |
| — | 770-349 | 5XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-357 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA SO | GA |
| — | 770-359 | 7XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-362 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-376 | 0–9 XXXall 10 · 4 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA SO | GA |
| — | 770-405 | 8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NW | GA |
| — | 770-408 | 8XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-515 | 7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA SO | GA |
| — | 770-542 | 7XXX8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-543 | 8XXX9XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-544 | 7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NW | GA |
| — | 770-635 | 5XXX7XXX8XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NW | GA |
| — | 770-738 | 7XXX8XXX which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NW | GA |
| — | 770-771 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 3 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-817 | not yet reported which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | GA |
| — | 770-820 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 2 holders which blocks → | PAETEC ITEL, LLC | 829J | ATLANTA NE | 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.