Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Switch: CMBRMAORDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
339-202 A Lexington MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-206 A Brighton MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-249 A Quincy MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-279 A Boston MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-299 A Cambridge MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-315 A South Boston MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-405 A Quincy MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-418 A East Boston MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-514 A Dorchester MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-531 A Boston MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-588 A Cambridge MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-602 A Roxbury MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-603 A Boston MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-712 A Charlestown MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-714 A Cambridge MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-831 A Newton MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-892 A Boston MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-952 A Charlestown MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-992 A Brookline MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
978-221 A Lowell MA 7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      

Last updated: Sun, 29 Nov 2020 13:13:58 UTC

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