478
Area code
Statusin service
Introduced2000-08-01
JurisdictionGA, US
Local dialing10D
Time zoneEastern
Last verified2026-09-17
Utilization 58.3% of assignable prefixes assigned
As of 09/17/2026
0%462 of ~792 assignable NXX values (200–999 excl. N11)100%
Prefix-level assignment does not equal number-level exhaustion; thousands-block pooling extends capacity. First assignment on record 2001-01-03, most recent 2026-09-14.
Area codes serve rate-center geographies, not municipal boundaries. “GA” identifies the jurisdiction, not an exact city footprint.
Top assignees
Ranked by assigned prefixes · initial assignee ≠ current carrier| Rank | Assignee | Prefixes | Share |
|---|---|---|---|
| 01 | BELLSOUTH TELECOMM INC DBA SOUTHERN BELL TEL & TEL | 72 | 15.6% |
| 02 | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - GA | 51 | 11% |
| 03 | ONVOY, LLC - GA | 49 | 10.6% |
| 04 | NEW CINGULAR WIRELESS PCS, LLC - GA | 38 | 8.2% |
| 05 | POWERTEL ATLANTA LICENSES, INC. | 22 | 4.8% |
| 06 | TELEPORT COMMUNICATIONS AMERICA, LLC - GA | 20 | 4.3% |
| 07 | LEVEL 3 COMMUNICATIONS, LLC - GA | 19 | 4.1% |
| 08 | WINDSTREAM GEORGIA COMMUNICATIONS CORP. | 18 | 3.9% |
| 09 | BANDWIDTH.COM CLEC, LLC - GA | 14 | 3% |
| 10 | PAETEC ITEL, LLC | 13 | 2.8% |
Important: these are initial assignees from NANPA CO-code records — the carrier a prefix was originally assigned to. Because of number portability, the current serving carrier of any individual number may differ.
Change history
Recorded events for this NPA- 2000-07-17 New Test Number for NPA 478 (Georgia) other
- 2000-08-01Area code 478 entered service (created from 912).
Planning letters & orders
Primary documents| Date | Document | Subject |
|---|---|---|
| 2021-01-08 | PL-556 ↗ | Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Lifeline) – supersedes PL-544 |
| 2020-08-17 | PL-544 ↗ | Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline |
| 2001-07-13 | PL-288 ↗ | Supplemental Information NPA SPLIT 912/478/229 Georgia |
| 2000-07-17 | PL-235 ↗ | New Test Number for NPA 478 (Georgia) |
| 1999-12-06 | PL-202 ↗ | 912 NPA split, Creating 229 and 478 NPAs - Georgia |