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
857-304 Watertown, MA Middlesex Landline
857-305 Boston, MA Suffolk Landline
857-307 Brookline, MA Norfolk Landline
857-312 Boston, MA Suffolk Cell Number
857-313 Boston, MA Suffolk Cell Number
857-317 Boston, MA Suffolk Landline
857-318 Boston, MA Suffolk Landline
857-321 Boston, MA Suffolk Cell Number
857-323 Chelsea, MA Suffolk Landline
857-333 Boston, MA Suffolk Cell Number
857-334 Boston, MA Suffolk Cell Number
857-342 Hyde Park, MA Suffolk Cell Number
857-345 Hyde Park, MA Suffolk Cell Number
857-350 Boston, MA Suffolk Cell Number
857-362 Boston, MA Suffolk Landline
857-363 Everett, MA Middlesex Cell Number
857-364 Brookline, MA Norfolk Landline
857-366 Boston, MA Suffolk Cell Number
857-368 Boston, MA Suffolk Landline
857-373 Needham, MA Norfolk 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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