Area code
478
478 is a United States area code. Under the North American Numbering Plan it belongs to Georgia, which has 10 area codes in total.
Validate a number in 478
Paste a full number and the tool checks it against the numbering plan. It returns the standard formats, the line type the plan assigns and the area code region.
Digits with or without punctuation work. Numbers outside the US are read with the +country code.
Area code 478 at a glance
NANPA lists 439 central office codes (prefixes) in use in area code 478, held by 52 holders across 50 rate centers.
| Fact | Value |
|---|---|
| In service since | 2000-08-01 |
| Time zone | Eastern (E) |
| Prefixes in use | 439 |
| Pooled prefixes | 286 (65%) |
| Rate centers | 50 |
| Companies holding prefixes | 52 |
| Assignment dates on file | 2001-01-03 to 2026-03-19 (238 prefixes) |
| ZIP codes in its places | 60 |
Rate centers in area code 478
| Rate center | Prefixes | Share |
|---|---|---|
| MACON | 145 | 33% |
| WARNERRBNS | 50 | 11% |
| DUBLIN | 26 | 6% |
| MILLEDGEVL | 19 | 4% |
| SANDERSVL | 13 | 3% |
| SWAINSBORO | 13 | 3% |
| COCHRAN | 10 | 2% |
| PERRY | 10 | 2% |
| 42 other rate centers | 153 | 35% |
Who holds the prefixes in 478
Southern Bell Tel & Tel holds the most prefixes, 69 (16%). 65% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
| Holder | Prefixes | Share |
|---|---|---|
| Southern Bell Tel & Tel | 69 | 16% |
| Verizon Wireless | 51 | 12% |
| Onvoy | 47 | 11% |
| New Cingular Wireless PCS | 35 | 8% |
| Powertel Atlanta Licenses | 23 | 5% |
| Teleport Communications America | 20 | 5% |
| 46 other carriers | 194 | 44% |
A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company. Find which carrier a number is on, or browse the prefix holders.
History of area code 478
- 1954-01-01 Area code 912, named as the parent of 478 in the NANPA report, was in service.
- 2000-08-01 Area code 478 went into service.
Area codes nearest to 478
Distance is measured between the centers of the ZIP code places each area code serves, so it is a rough guide.
ZIP codes in area code 478
60 ZIP codes fall in places that have a rate center in this area code.
| Place | ZIP codes |
|---|---|
| Macon, GA | 20 |
| Dublin, GA | 2 |
| Adrian, GA | 1 |
A ZIP code and an area code are unrelated systems. A ZIP code can sit in more than one area code, and an area code spans many ZIP codes.
Complaints on file for 478 numbers
1,351 FCC complaints are on file for 1,092 numbers in 478, most often filed as "Unwanted Calls". These are unverified consumer reports.
| Year of latest complaint | Numbers |
|---|---|
| 2023 | 65 |
| 2024 | 84 |
| 2025 | 63 |
Other area codes in Georgia
Georgia is one state with 10 area codes in the NANPA table. 478 is one of them.
Next to 478 in the numbering table
These are the codes just before and after 478 when all are sorted by number. They are neighbours on the list, not necessarily on the map.
What the area code does and does not tell you
A number that starts with 478 was first assigned in Georgia. That is a fact about where the number began, and it is a useful hint when you check a form entry, for example a billing address in Georgia next to a 478 phone number.
It does not show where the person is today. A number stays with its owner after a move or a change of provider (number portability), and mobile numbers travel with the handset. The area code also cannot tell you whether the line is active, who the carrier is, or whether the number is mobile or fixed: the plan shares those ranges. Read more about the area code, the numbering plan and line type.
Check numbers in bulk with the API
| Product | Credits | Docs |
|---|---|---|
| Phone Numbering-Plan Validation | 1 credit per valid number | API docs |
| Phone Intelligence (carrier and line status) | 1 credit per check (invalid numbers outside the US and Canada are free) | Product page |
Questions about area code 478
Where is area code 478?
NANPA assigns area code 478 to Georgia, United States.
In which state does area code 478 sit?
Georgia. 478 is one of 10 area codes the NANPA table assigns to the state.
Which places does area code 478 cover?
The places with the most ZIP codes among the rate centers in 478 are Macon, GA, Dublin, GA and Adrian, GA. The rate center list on this page shows all of them.
Who owns area code 478?
NANPA assigns area codes. Within 478, Southern Bell Tel & Tel holds the most prefixes, 69 prefixes or 16%.
Which time zone does 478 use?
The NANPA NPA report lists the time zone for 478 as Eastern (E).
What year did 478 enter service?
The NANPA NPA report gives an in-service date of 2000-08-01, so 478 has been in use since 2000.
Does area code 478 have an overlay?
The NANPA NPA report lists no other area code in an overlay with 478.
Which area codes are nearest to 478?
The area codes closest to 478, measured between the centers of the ZIP code places they serve, are 762 (about 77 miles), 706 (about 80 miles), 229 (about 95 miles), 943 (about 97 miles) and 404 (about 98 miles).
How many prefixes does area code 478 have?
NANPA's report dated 2026-10-17 lists 439 prefixes in service in 478, spread over 50 rate centers and 52 holders.
Are there complaints about 478 numbers?
The FCC data on file has 1,351 complaints for 1,092 numbers in 478. They are unverified consumer reports. A number with no complaints on file is not proven safe.
Area code assignments: North American Numbering Plan Administrator NPA report, file dated 10/17/2026, retrieved 2026-10-17. Source file. New codes are assigned several times a year. Prefixes, rate centers, holders, time zone, in-service date and overlays: NANPA central office code report dated 2026-10-17 and NPA report dated 2026-10-18. Complaints: FCC consumer complaints open data, fetched 2026-10-17. ZIP code places: Postal code places and coordinates: GeoNames (geonames.org), licensed CC BY 4.0.