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 |
|---|---|---|---|---|---|---|
| 2007-12-28 | 478-429 | 2XXX3XXX4XXX5XXX6XXX7XXX8XXX which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | BYROMVILLE | GA |
| 2003-10-08 | 478-285 | 0–9 XXXall 10 · 4 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | EASTMAN | GA |
| 2003-10-07 | 478-298 | 0–9 XXXall 10 · 5 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | COCHRAN | GA |
| 2003-05-22 | 478-588 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | SWAINSBORO | GA |
| 2003-04-04 | 478-221 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 4 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | GRAY | GA |
| 2003-04-04 | 478-223 | 0XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | MILLEDGEVL | GA |
| 2002-12-04 | 478-488 | 2XXX3XXX4XXX7XXX8XXX9XXX · 4 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | DUBLIN | GA |
| 2002-10-10 | 478-217 | 1XXX2XXX3XXX4XXX5XXX6XXX7XXX8XXX9XXX · 5 holders which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | WARNERRBNS | GA |
| — | 478-214 | not yet reported which blocks → | SOUTHERN COMMUNICATIONS SERVICES, INC. | 6744 | MACON | 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.