Area Code 857 - Boston, MA

Below is the information for Area Code 857
General Information for Area Code 857
Country United States
State/Province Massachusetts
Major City Boston
Time Zone Eastern

Phone directory of numbers beginning with Area Code 857 Prefixes

Prefix Primary City County Phone Type
857-221 Boston, MA Suffolk Cell Number
857-222 Boston, MA Suffolk Cell Number
857-223 Boston, MA Suffolk Landline
857-224 Boston, MA Suffolk Landline
857-225 Brookline, MA Norfolk Cell Number
857-226 Newton, MA Middlesex Landline
857-227 Somerville, MA Middlesex Landline
857-228 Watertown, MA Middlesex Landline
857-229 Newton, MA Middlesex Landline
857-230 Roxbury, MA Suffolk Cell Number
857-231 Newton, MA Middlesex Cell Number
857-232 Newton, MA Middlesex Landline
857-233 Boston, MA Suffolk Landline
857-234 Brookline, MA Norfolk Cell Number
857-235 Cambridge, MA Middlesex Landline
857-236 Boston, MA Suffolk Cell Number
857-237 Boston, MA Suffolk Cell Number
857-238 Boston, MA Suffolk Landline
857-239 Boston, MA Suffolk Landline
857-240 Cambridge, MA Middlesex Landline

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Location Details

Area code is a type of numbering scheme used in telecommunication. It divides the territories of its member countries, the code is a three-digit code. The digits 0 and 1 applied for central office codes. Other digits were applied into geographic areas of the service territory.

  • 200: easily recognizable code (ERC)
  • 201: New Jersey
  • 202: Washington, D.C.
  • 203: Connecticut
  • and so on.

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