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: 378

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-378 A Amesbury MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2025-04-11   
978-378 0 Amesbury MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2008-12-06   
978-378 1 Amesbury MA   829J PAETEC ITEL, LLC 128   2005-04-18   
978-378 2 Amesbury MA   829J PAETEC ITEL, LLC 128   2006-09-19   
978-378 3 Amesbury MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-09-02   
978-378 4 Amesbury MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-09-05   
978-378 5 Amesbury MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-09-11   
978-378 6 Amesbury MA   145J TERRA NOVA TELECOM INC. 128   2021-09-24   
978-378 7 Amesbury MA   5562 METROPCS, INC. 128   2025-06-01   
978-378 9 Amesbury MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-03-20   

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

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