Area code 857
Assigned to Massachusetts.
Area code 857 is a geographic code in the North American Numbering Plan. Most of this region uses the America/New York time zone.
Other area codes in Massachusetts: 339, 351, 413, 508, 617, 774, 781, 978.
Is a call from 857 local?
Not necessarily. People keep their numbers when they move, internet phone numbers can be used anywhere, and robocallers often spoof local-looking numbers. Learn about spoofing.