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.

Switch: OGNWCT00RS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
203-637 A Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 A Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 0 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 1 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 2 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 3 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 4 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 7 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 8 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
203-698 9 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
475-249 A Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920      
475-249 0 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-08-21   
475-249 1 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-08-21   
475-249 2 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-08-21   
475-249 3 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-08-21   
475-249 4 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-08-21   
475-249 5 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-08-21   
475-249 6 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-08-21   
475-249 7 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-08-21   
475-249 8 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-08-21   
475-249 9 Old Greenwich CT 9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT 920   2014-08-21   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.