Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 617 [Rate centres in NPA 617] [Dial plan for NPA 617]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-778 A Boston MA WRCSMA05DS0  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
617-778 0 Boston MA   4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128   2003-01-13   
617-778 1 Boston MA   4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128   2003-04-22   
617-778 2 Boston MA   4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128   2003-08-11   
617-778 3 Boston MA   6664 SPRINT SPECTRUM L.P. 128   2003-11-01   
617-778 4 Boston MA   6664 SPRINT SPECTRUM L.P. 128   2003-11-01   
617-778 5 Boston MA   4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
617-778 6 Boston MA   4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
617-778 7 Boston MA   4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
617-778 8 Boston MA   6664 SPRINT SPECTRUM L.P. 128   2003-11-01   
617-778 9 Boston MA   4536 XO MASSACHUSETTS, INC. 128   2003-08-10   

Last updated: Sat, 31 Oct 2020 19:28:10 UTC

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