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 |
|---|---|---|---|---|---|---|
| 2024-03-18 | 478-399 | 7XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | BUTLER | GA |
| 2023-09-28 | 478-393 | 3XXX7XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | CHESTER | GA |
| 2023-09-26 | 478-392 | 7XXX which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | REYNOLDS | GA |
| 2023-09-12 | 478-384 | 1XXX7XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | KITE | GA |
| 2023-09-12 | 478-385 | 1XXX7XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | ADRIAN | GA |
| 2022-04-22 | 478-243 | 1XXX4XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | DAVISBORO | GA |
| 2021-11-05 | 478-354 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | FORTVALLEY | GA |
| 2004-11-19 | 478-220 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | EASTMAN | GA |
| 2004-10-28 | 478-202 | 0–9 XXXall 10 · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | WADLEY | GA |
| 2003-02-10 | 478-225 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | WARNERRBNS | GA |
| 2002-06-13 | 478-287 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX9XXX · 6 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | PERRY | GA |
| 2002-05-17 | 478-387 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | MILLEDGEVL | GA |
| 2002-04-25 | 478-268 | 0XXX1XXX2XXX3XXX5XXX6XXX7XXX8XXX · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | SWAINSBORO | GA |
| 2002-04-25 | 478-787 | 0XXX1XXX2XXX3XXX5XXX7XXX8XXX9XXX · 2 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | MACON | GA |
| 2002-03-28 | 478-246 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | DUBLIN | GA |
| 2002-03-28 | 478-247 | 1XXX2XXX3XXX4XXX5XXX6XXX8XXX9XXX · 7 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | SANDERSVL | GA |
| 2002-03-26 | 478-238 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | MACON | GA |
| 2001-01-31 | 478-845 | 5XXX7XXX8XXX9XXX · 3 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | MACON | GA |
| — | 478-216 | 0–9 XXXall 10 · 4 holders which blocks → | LEVEL 3 COMMUNICATIONS, LLC - GA | 6116 | MACON | GA |
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.