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Area code 577 is a code format intended for personal communications services.
The 577 area code is nonspecific to any geographic area.
It was first put into service in March 2014.
It is one of the 5XX format area codes that succeeded the original 500 code, the first to be used for personal mobility services. Along with 522, 533, 544, and 566, the 577 number is an “easily recognizable” code due to its matching second and third digits.
Area Code 577 Extensions