Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 617 [Rate centres in NPA 617] [Dial plan for NPA 617]

NXX: 475

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-475 A Cambridge MA CMBRMAORDS1  7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-475 0 Cambridge MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-03-24   
617-475 1 Cambridge MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-475 2 Cambridge MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-475 3 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-11-18   
617-475 4 Cambridge MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-475 5 Cambridge MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-10-11   
617-475 6 Cambridge MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-475 7 Cambridge MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-475 8 Cambridge MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
617-475 9 Cambridge MA   7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      

Last updated: Sun, 04 Apr 2021 19:28:27 UTC

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