Local Calling Guide

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

NXX: 433

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-433 A Milton MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
617-433 0 Milton MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2013-01-21   
617-433 1 Milton MA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2006-09-30   
617-433 2 Milton MA   829J PAETEC ITEL, LLC 128      
617-433 3 Milton MA   7135 TC SYSTEMS, INC. 128      
617-433 4 Milton MA   829J PAETEC ITEL, LLC 128   2004-10-15   
617-433 5 Milton MA   892D ONVOY, LLC - MA 128   2010-04-07   
617-433 6 Milton MA   316E YMAX COMMUNICATIONS CORP. - MA 128   2009-08-21   
617-433 7 Milton MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-06-26   
617-433 8 Milton MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-11-15   
617-433 9 Milton MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2012-12-22   

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

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