Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 318

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-318 A Roxbury MA CMBRMAWA0MD  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
617-318 0 Roxbury MA CMBRMAWA0MD  3370 CTC COMMUNICATIONS CORP. - MA 128      
617-318 1 Roxbury MA CHTWMABMAMD  2899 BROADVIEW NETWORKS, INC. - MA 128      
617-318 2 Roxbury MA SOVLMAABBMD  145J TERRA NOVA TELECOM INC. 128      
617-318 3 Roxbury MA CHTWMABMBMD  2899 BROADVIEW NETWORKS, INC. - MA 128      
617-318 4 Roxbury MA   515J IP HORIZON LLC 128      
617-318 5 Roxbury MA CHTWMABF2MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128      
617-318 6 Roxbury MA CMBRMAWA0MD  4052 CONVERSENT COMMUNICATIONS OF MASSACHUSETTS, LLC 128      
617-318 7 Roxbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
617-318 8 Roxbury MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128      
617-318 9 Roxbury MA CMBRMAMQDS3  316E YMAX COMMUNICATIONS CORP. - MA 128      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.