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: 633

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
574-633 A Wyatt IN WYTTINXARS0  0772 FRONTIER NORTH, INC.. - IN 332      
574-633 0 Wyatt IN WYTTINXARS0  0772 FRONTIER NORTH, INC.. - IN 332      
574-633 1 Wyatt IN EKHTINXAJMD  097D ONVOY, LLC - IN 332   2019-08-03   
574-633 2 Wyatt IN WYTTINXARS0  0772 FRONTIER NORTH, INC.. - IN 332      
574-633 3 Wyatt IN PLMOINXAXMD  508J CENTURYLINK COMMUNICATIONS, LLC 332   2014-04-18   
574-633 4 Wyatt IN WYTTINXARS0  0772 FRONTIER NORTH, INC.. - IN 332      
574-633 5 Wyatt IN SBNDIN053MD  4803 LEVEL 3 COMMUNICATIONS, LLC - IN 332   2003-03-23   
574-633 6 Wyatt IN SBNDIN053MD  4803 LEVEL 3 COMMUNICATIONS, LLC - IN 332   2005-02-11   
574-633 7 Wyatt IN EKHTINXAJMD  097D ONVOY, LLC - IN 332   2018-10-18   
574-633 8 Wyatt IN SBNDIN01XHX  105F BANDWIDTH.COM CLEC, LLC - IN 332   2019-05-23   
574-633 9 Wyatt IN EKHTINXAJMD  097D ONVOY, LLC - IN 332   2019-08-03   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.