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521 Area Code Phone Directory
Phone Prefixes in the 521 Area Code
Information for Area Code 521
Largest City in Area: AUSTIN
Where is Area Code 521?
Area code (521) is in the state of TX. Below, are the major cities in the area code (521).
Area Codes Starting with 5
Major Cities in 521
AUSTIN, TX (182)
DES MOINES, IA (165)
IOWA CITY, IA (155)
MELBOURNE, FL (145)
ORLANDO, FL (131)
CEDAR RAPIDS, IA (106)
PALM BAY, FL (104)
BALTIMORE, MD (89)
AMES, IA (78)
DAVENPORT, IA (78)