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: 504

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-504 A Amesbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
978-504 0 Amesbury MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
978-504 1 Amesbury MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
978-504 2 Amesbury MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2014-03-31   
978-504 3 Amesbury MA   892D ONVOY, LLC - MA 128   2016-03-24   
978-504 4 Amesbury MA   732H BARR TELL USA, INC. - MA 128   2016-01-01   
978-504 5 Amesbury MA   892D ONVOY, LLC - MA 128   2016-03-24   
978-504 6 Amesbury MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
978-504 7 Amesbury MA   508J CENTURYLINK COMMUNICATIONS, LLC 128   2014-04-24   
978-504 8 Amesbury MA   515J IP HORIZON LLC 128   2015-10-26   
978-504 9 Amesbury MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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