Local Calling Guide

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NPA: 978 [Rate centres in NPA 978] [Dial plan for NPA 978]

NXX: 558

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-558 A Bolton MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-558 0 Bolton MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   
978-558 1 Bolton MA   829J PAETEC ITEL, LLC 128   2005-04-02   
978-558 3 Bolton MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-03   
978-558 4 Bolton MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-05-13   
978-558 6 Bolton MA   145J TERRA NOVA TELECOM INC. 128   2023-06-22   
978-558 7 Bolton MA   508J CENTURYLINK COMMUNICATIONS, LLC 128   2014-04-25   
978-558 8 Bolton MA   624H ONVOY SPECTRUM, LLC 128   2021-03-03   
978-558 9 Bolton MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2015-09-26   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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