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: 391

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-391 A Boston MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128      
617-391 0 Boston MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
617-391 1 Boston MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128      
617-391 2 Boston MA CMBRMAWA0MD  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
617-391 3 Boston MA   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 128      
617-391 4 Boston MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
617-391 5 Boston MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
617-391 6 Boston MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
617-391 7 Boston MA CMBRMAMQDS3  316E YMAX COMMUNICATIONS CORP. - MA 128      
617-391 8 Boston MA CMBRMAMQDS3  316E YMAX COMMUNICATIONS CORP. - MA 128      
617-391 9 Boston MA CHTWMABF2MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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