Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 978 [Rate centres in NPA 978] [Dial plan for NPA 978]

NXX: 639

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-639 A Sudbury MA CMBRMAORDS0  7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
978-639 3 Sudbury MA BSTNMACODS7  4084 PAETEC COMMUNICATIONS, INC.- MA 128   2006-10-02   
978-639 4 Sudbury MA CMBRMAORDS0  7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128   2008-09-30   
978-639 6 Sudbury MA CMBRMAORDS0  7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      
978-639 7 Sudbury MA BSTPMALL5MD  508J CENTURYLINK COMMUNICATIONS LLC 128   2014-04-24   
978-639 8 Sudbury MA SOVLMAABDS2  268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-05   
978-639 9 Sudbury MA CMBRMAORDS0  7199 MCI WORLDCOM COMMUNICATIONS, INC. - MA 128      

Last updated: Tue, 04 May 2021 15:04:27 UTC

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