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: 330

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-330 A Billerica MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-330 0 Billerica MA   6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2021-12-31   
978-330 1 Billerica MA   892D ONVOY, LLC - MA 128   2010-03-15   
978-330 2 Billerica MA   316E YMAX COMMUNICATIONS CORP. - MA 128   2008-03-08   
978-330 3 Billerica MA   829J PAETEC ITEL, LLC 128   2006-10-30   
978-330 4 Billerica MA   316E YMAX COMMUNICATIONS CORP. - MA 128   2009-02-17   
978-330 5 Billerica MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-330 6 Billerica MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-09-11   
978-330 7 Billerica MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2011-06-27   
978-330 8 Billerica MA   5562 METROPCS, INC. 128   2011-08-15   
978-330 9 Billerica MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2013-05-04   

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

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