Local Calling Guide

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

NXX: 612

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-612 A Watertown MA CMBRMA01DS5  7135 TC SYSTEMS, INC. 128      
617-612 0 Watertown MA   515J IP HORIZON LLC 128   2016-07-01   
617-612 1 Watertown MA   7135 TC SYSTEMS, INC. 128      
617-612 2 Watertown MA   7135 TC SYSTEMS, INC. 128      
617-612 3 Watertown MA   829J PAETEC ITEL, LLC 128   2002-10-13   
617-612 4 Watertown MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2014-05-23   
617-612 5 Watertown MA   990E BANDWIDTH.COM CLEC, LLC - MA 128   2010-06-26   
617-612 6 Watertown MA   829J PAETEC ITEL, LLC 128   2008-06-09   
617-612 7 Watertown MA   7135 TC SYSTEMS, INC. 128      
617-612 8 Watertown MA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128   2007-05-13   
617-612 9 Watertown MA   7135 TC SYSTEMS, INC. 128      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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