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: 540

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
574-540 A Plymouth IN SBNDIN05NMD  2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 332      
574-540 0 Plymouth IN   4117 FBN INDIANA, INC. - IN 332   2004-04-11   
574-540 1 Plymouth IN   5562 METROPCS, INC. 332      
574-540 2 Plymouth IN   318J COMCAST IP PHONE, LLC 332   2005-09-02   
574-540 3 Plymouth IN   5562 METROPCS, INC. 332      
574-540 4 Plymouth IN   097D ONVOY, LLC - IN 332   2021-09-04   
574-540 5 Plymouth IN   097D ONVOY, LLC - IN 332   2021-09-04   
574-540 6 Plymouth IN   5562 METROPCS, INC. 332      
574-540 7 Plymouth IN   5562 METROPCS, INC. 332   2011-03-04   
574-540 8 Plymouth IN   5562 METROPCS, INC. 332   2012-07-19   
574-540 9 Plymouth IN   2964 OMNIPOINT COMMUNICATIONS MIDWEST OPERATIONS, LLC 332      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.