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: 917

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-917 A Sudbury MA BSTPMALLDS3  892D ONVOY, LLC - MA 128      
978-917 0 Sudbury MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-05   
978-917 1 Sudbury MA   515J IP HORIZON LLC 128   2015-10-30   
978-917 2 Sudbury MA   892D ONVOY, LLC - MA 128   2019-05-17   
978-917 4 Sudbury MA   892D ONVOY, LLC - MA 128   2022-05-22   
978-917 6 Sudbury MA   892D ONVOY, LLC - MA 128   2016-03-14   
978-917 7 Sudbury MA   892D ONVOY, LLC - MA 128   2016-03-14   
978-917 8 Sudbury MA   073H TELNYX LLC 128   2017-04-28   
978-917 9 Sudbury MA   624H ONVOY SPECTRUM, LLC 128   2021-11-27   

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

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