250px|thumb|Area codes 781 and 339

250px|thumb|Massachusetts' area codes

Area code 781 and 339 are telephone area codes in the North American Numbering Plan for the U.S. state of Massachusetts. The numbering plan area consists of Boston’s inner suburbs along the Route 128 corridor, and some outer suburbs, especially in the South Shore region. Major cities and towns with the area code include Waltham, Woburn, Lynn, Weymouth and Dedham. It was created as in an area code split of area code 617 on September 1, 1997. Use of 781 became mandatory February 1, 1998. Area code 339 is an overlay complex code for the same service area, activated on May 2, 2001. Since then, ten-digit dialing has been mandatory. (treated as calling to the 617 area code)

  • 6-1-1: unused
  • 7-1-1: TDD relay (MassRelay) for the deaf
  • 8-1-1: underground public utility location (Dig Safe),
  • 9-1-1: emergency services

See also

  • List of area codes in Massachusetts
  • List of North American Numbering Plan area codes

References

  • Massachusetts Area Code Map, Mass. Department of Telecommunications and Cable