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: 670

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
617-670 A Boston MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-670 0 Boston MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-670 1 Boston MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-670 2 Boston MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-670 3 Boston MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-670 4 Boston MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-670 5 Boston MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-670 6 Boston MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-670 7 Boston MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
617-670 8 Boston MA BSTNMACOVMD  4084 PAETEC COMMUNICATIONS, INC. - MA 128      
617-670 9 Boston MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.