Local Calling Guide

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

NXX: 431

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-431 A Newton MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
617-431 0 Newton MA CATNMAAKAMD  6387 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA 128   2015-01-15   
617-431 1 Newton MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2007-06-20   
617-431 2 Newton MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-01-29   
617-431 3 Newton MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2012-09-09   
617-431 4 Newton MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2003-03-24   
617-431 5 Newton MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2004-10-01   
617-431 6 Newton MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2013-09-08   
617-431 7 Newton MA CMBRMAMQDS3  316E YMAX COMMUNICATIONS CORP. - MA 128   2008-11-17   
617-431 8 Newton MA BSTNMABLOMD  990E BANDWIDTH.COM CLEC, LLC - MA 128   2012-09-09   
617-431 9 Newton MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      

Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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