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.

Last updated: Wed, 01 Jul 2015 02:21:19 UTC

NPA: 203 [Rate centres in NPA 203] [Dial plan for NPA 203]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
203-772 A New Haven CT NWHNCT03DS3  9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920     map
203-772 0 New Haven CT   9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920      
203-772 1 New Haven CT   9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920      
203-772 2 New Haven CT   9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920      
203-772 3 New Haven CT   9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920      
203-772 4 New Haven CT   9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920      
203-772 5 New Haven CT   9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920      
203-772 6 New Haven CT   9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920      
203-772 7 New Haven CT   9147 SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT [link] 920      
203-772 8 New Haven CT   199F BANDWIDTH.COM CLEC, LLC - CT [link] 920 2010-07-03     
203-772 9 New Haven CT   6624 OMNIPOINT COMMUNICATIONS, INC. - CT [link] 920 2007-11-12     

Sponsored by: VoIP Much Phone Company