Area Code Atlas

NPA 601 assigned as original Mississippi area code

Area code 601 was one of the original North American area codes assigned in 1947, serving the entire state of Mississippi.

NPA 228 split from 601

Area code 228 was created in 1997 when the Gulf Coast region of Mississippi, including Hancock, Harrison, and Jackson counties, was split from the original statewide area code 601. This change was implemented to accommodate growing demand for telephone numbers in the region, reducing the coverage of 601 to central and southern Mississippi, excluding the Gulf Coast.

NANP-Split of 601 (Mississippi) Numbering Plan Area (NPA)

Extraordinary Jeopardy Procedures for 601 NPA in Mississippi

NPA 662 split from 601

In 1999, area code 662 was introduced as a split from 601, serving the northern half of Mississippi, including the Mississippi side of the Memphis area. This change further reduced the geographic coverage of 601 to central and southern parts of the state.

Geographic Split of 601 (Mississippi) Numbering Plan Area (NPA)

NPA 769 overlay on 601 announced

NPA 769 to Overlay NPA 601 (Mississippi)

NPA 769 overlay introduced for 601 in Mississippi

Area code 769 was approved and introduced on March 14, 2005, as Mississippi's first overlay complex, serving the same geographic area as 601 in central and southern Mississippi. This overlay was implemented to address number exhaustion in the region. Ten-digit dialing became mandatory in central Mississippi with this change.

Mandatory ten-digit dialing implemented for 601/769 overlay in Mississippi

Ten-digit dialing became mandatory in central Mississippi on March 14, 2005, due to the introduction of the 769 overlay on the 601 numbering plan area.