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: 904

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-904 A Newburyport MA   892D ONVOY, LLC - MA 128      
978-904 0 Newburyport MA   892D ONVOY, LLC - MA 128   2024-03-07   
978-904 1 Newburyport MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2014-05-01   
978-904 2 Newburyport MA   624H ONVOY SPECTRUM, LLC 128   2022-02-12   
978-904 3 Newburyport MA   829J PAETEC ITEL, LLC 128   2005-07-01   
978-904 5 Newburyport MA   6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2024-08-09   
978-904 6 Newburyport MA   624H ONVOY SPECTRUM, LLC 128   2022-02-12   
978-904 7 Newburyport MA   624H ONVOY SPECTRUM, LLC 128   2021-04-11   
978-904 8 Newburyport MA   515J IP HORIZON LLC 128   2015-10-26   
978-904 9 Newburyport MA   732H BARR TELL USA, INC. - MA 128   2016-01-01   

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

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