404

Area code 404, serving Atlanta, Georgia and its nearest suburbs, is rich in history and has undergone significant changes over the years. Historical Significance: Area code 404 was established in 1947, initially covering the entire state of Georgia. It is one of the original area codes created in the North American Numbering Plan (NANP) and has since become synonymous with Atlanta and its surrounding areas, especially the region enclosed by Interstate 285​​. Geographical Coverage: Currently, area code 404 serves key counties such as Clayton, DeKalb, Fulton, Cobb, Douglas, and Gwinnett. This coverage reflects the area code's evolution as it originally served the entire state of Georgia but now focuses on Atlanta and its closest suburbs​​. Evolution and Overlay Complex: The 404 area code has undergone several splits and overlays throughout its history. In 1992, it was split to form area code 706, and again in 1995 to form area code 770. Subsequently, area code 404 was overlaid with area codes 678 in 1998 and 470 in 2010. This has resulted in a complex overlay of area codes 404, 470, 678, and 770, necessitating ten-digit dialing in this region​​. In conclusion, area code 404 is not just a series of digits; it's a historical emblem that has witnessed the growth and changes of Atlanta and its suburbs. From covering the entire state of Georgia to becoming an integral part of Atlanta's telecommunication identity, area code 404 reflects the dynamism of the region it serves.