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Exchange Details

Line Type Land line, non-wireless service
Provider Name XO MASSACHUSETS INC XO COMMUNICATIONS INC XO Holdings Inc
Cities in Area Code 857-816-0000

Cambridge, Charlestown

Metropolitan Statisitical Areas in Area Code 857

Boston, Cambridge, Quincy

Counties in Area Code 857

Suffolk

States / Provinces

Massachusetts

*Approximate area serviced by the 857 area code

Phone Number Blocks in the (857)-816 Exchange

Area Code and Exchange Number Block Line Type City Zip Codes
857-816- 0000-0 999 Land line, non-wireless service CAMBRIDGE 02152 01908 02109 02110
857-816- 1000-1 999 Land line, non-wireless service CAMBRIDGE 02152 01908 02109 02110
857-816- 3000-3 999 Land line, non-wireless service CAMBRIDGE 02152 01908 02109 02110
857-816- 4000-4 999 Land line, non-wireless service CAMBRIDGE 02152 01908 02109 02110
857-816- 5000-5 999 Land line, non-wireless service CHARLESTOWN 02152 01908 02109 02110
857-816- 0000-9999 Land line, non-wireless service CAMBRIDGE 02152 01908 02109 02110

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