Local Calling Guide

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NPA: 617 [Rate centres in NPA 617] [Dial plan for NPA 617]

NXX: 766

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-766 A South Boston MA BSTNMALBDS1  7135 TC SYSTEMS, INC. 128      
617-766 0 South Boston MA   892D ONVOY, LLC - MA 128   2020-06-07   
617-766 1 South Boston MA   892D ONVOY, LLC - MA 128   2020-06-07   
617-766 2 South Boston MA   829J PAETEC ITEL, LLC 128   2013-08-26   
617-766 3 South Boston MA   268F PEERLESS NETWORK OF MASSACHUSETTS, LLC - MA 128   2011-10-27   
617-766 5 South Boston MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-08-26   
617-766 6 South Boston MA   316E YMAX COMMUNICATIONS CORP. - MA 128   2011-03-15   
617-766 7 South Boston MA   829J PAETEC ITEL, LLC 128   2011-10-13   
617-766 8 South Boston MA   318J COMCAST IP PHONE, LLC 128   2014-01-22   
617-766 9 South Boston MA   7135 TC SYSTEMS, INC. 128      

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

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