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: 520

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-520 A Wilmington MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128      
978-520 0 Wilmington MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128      
978-520 1 Wilmington MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2010-03-15   
978-520 5 Wilmington MA CMBRMABENMD  624H ONVOY SPECTRUM, LLC 128   2021-04-15   
978-520 8 Wilmington MA   515J IP HORIZON LLC 128   2016-07-01   
978-520 9 Wilmington MA BSTPMALLDS3  892D ONVOY, LLC - MA 128   2019-02-11   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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