Permissive dialing began August 1, 1995, mandatory from December 1, 1995.
Area code 770 is one of the area codes for the Atlanta metropolitan area. Most numbers in 770 have local calling to all of 404, 770, 678, and 470, plus parts of 706, 762, and 256. To place a local call in this area, you must dial the area code and the 7-digit local number, but without the prefix '1'.
The area code for Marietta, GA is 770, with overlay codes 678 and 470.
The country code and area code of Fangchenggang- GX, China is 86, (0)770.
Carrollton, Georgia, USA
The country code and area code of Mikata District- Fukui, Japan is 81, (0)770.
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Winder, GA, is in area codes 770, 678, and 470 (multi-overlay).
Woodstock, Georgia, is in suburban Atlanta area code 770, with overlay codes 678 and 470. There may also be some numbers in area code 404 in Woodstock.
Stone Mountain is in area codes 404, 770, 678, and 478 (multi-overlay).
Jonesboro, GA, is in area code 770, with overlay codes 678 and 470. It is also possible that there may be a few 404 numbers in Jonesboro.
Area code 470 is an overlay on Atlanta's area codes 404, 770, and 678. It covers an enormous chunk of northern Georgia, with hundreds of different ZIP Codes.
In the Atlanta phone book, or on a yellow pages website.