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: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 315

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-315 A Natick MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
508-315 0 Natick MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
508-315 1 Natick MA   829J PAETEC ITEL, LLC 128   2002-10-13   
508-315 2 Natick MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2007-03-10   
508-315 3 Natick MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
508-315 4 Natick MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
508-315 5 Natick MA CHTWMABF2MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 128   2005-04-03   
508-315 6 Natick MA CMBRMAORDSG  4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2008-09-16   
508-315 7 Natick MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2006-11-20   
508-315 8 Natick MA STHMMAGBGT0  7619 RCN TELECOM SERVICES, INC. - MA 128      
508-315 9 Natick MA NRTNMAAACM4  6889 OMNIPOINT MIAMI E LICENSE, LLC 128   2005-07-28   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.