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: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
574-256 A South Bend IN MSHWIN02DS0  9325 AMERITECH INDIANA 332      
574-256 0 South Bend IN MSHWIN02DS0  9325 AMERITECH INDIANA 332      
574-256 1 South Bend IN MSHWIN02DS0  9325 AMERITECH INDIANA 332      
574-256 2 South Bend IN MSHWIN02DS0  9325 AMERITECH INDIANA 332      
574-256 3 South Bend IN MSHWIN02DS0  9325 AMERITECH INDIANA 332      
574-256 4 South Bend IN MSHWIN02DS0  9325 AMERITECH INDIANA 332      
574-256 5 South Bend IN MSHWIN02DS0  9325 AMERITECH INDIANA 332      
574-256 6 South Bend IN MSHWIN02DS0  9325 AMERITECH INDIANA 332      
574-256 7 South Bend IN MSHWIN02DS0  9325 AMERITECH INDIANA 332      
574-256 8 South Bend IN SBNDIN05NMD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS LLC 332   2009-10-02   
574-256 9 South Bend IN MSHWIN02DS0  9325 AMERITECH INDIANA 332      

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.