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: 574 [Rate centres in NPA 574] [Dial plan for NPA 574]

NXX: 664

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
574-664 A Twelve Mile IN TWMLINXARL0  0832 UNITED TEL. CO. OF INDIANA, INC. DBA CENTURYLINK 336      
574-664 0 Twelve Mile IN TWMLINXARL0  0832 UNITED TEL. CO. OF INDIANA, INC. DBA CENTURYLINK 336      
574-664 1 Twelve Mile IN TWMLINXARL0  0832 UNITED TEL. CO. OF INDIANA, INC. DBA CENTURYLINK 336      
574-664 2 Twelve Mile IN TWMLINXARL0  0832 UNITED TEL. CO. OF INDIANA, INC. DBA CENTURYLINK 336      
574-664 3 Twelve Mile IN TWMLINXARL0  0832 UNITED TEL. CO. OF INDIANA, INC. DBA CENTURYLINK 336      
574-664 4 Twelve Mile IN TWMLINXARL0  0832 UNITED TEL. CO. OF INDIANA, INC. DBA CENTURYLINK 336      
574-664 5 Twelve Mile IN TWMLINXARL0  0832 UNITED TEL. CO. OF INDIANA, INC. DBA CENTURYLINK 336      
574-664 6 Twelve Mile IN TWMLINXARL0  0832 UNITED TEL. CO. OF INDIANA, INC. DBA CENTURYLINK 336      
574-664 7 Twelve Mile IN TWMLINXARL0  0832 UNITED TEL. CO. OF INDIANA, INC. DBA CENTURYLINK 336      
574-664 8 Twelve Mile IN IPLWINRO6MD  4803 LEVEL 3 COMMUNICATIONS, LLC - IN 336   2014-08-02   
574-664 9 Twelve Mile IN TWMLINXARL0  0832 UNITED TEL. CO. OF INDIANA, INC. DBA CENTURYLINK 336      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.