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
617-379 A Dorchester MA SBTNMAFHDS0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-379 0 Dorchester MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2005-09-01   
617-379 1 Dorchester MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2007-05-24   
617-379 2 Dorchester MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2006-07-14   
617-379 3 Dorchester MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-01-29   
617-379 4 Dorchester MA   7421 AT&T LOCAL 128   2003-11-30   
617-379 5 Dorchester MA   966C DSCI, LLC 128   2005-04-10   
617-379 6 Dorchester MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-02-15   
617-379 7 Dorchester MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-02-15   
617-379 8 Dorchester MA   7619 RCN TELECOM SERVICES, INC. - MA 128      
617-379 9 Dorchester MA   7619 RCN TELECOM SERVICES, INC. - MA 128      

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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