6/4/2023 0 Comments 404 area code![]() Previously, the 404 numbering plan served 640 central offices. In an effort to delay splitting the area code, Southern Bell (later BellSouth, now part of AT&T Inc.) decided to introduce interchangeable central office codes, effective October, 1 1989. ![]() ![]() However, by the end of the 1980s, 404 was on the brink of exhaustion. Area code 404 was reduced to the northern half of the state, from the Tennessee and North Carolina borders as far south as Columbus and Augusta.ĭespite Atlanta's growth in the 1970s and 1980s, 404 remained unchanged for 38 years. On July 1, 1954, the area from Macon southward was split off as area code 912. Area code 404 was created in 1947 as one of the original numbering plan areas in North America, serving the entire state of Georgia.
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