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: 742

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
574-742 A Osceola IN SBNDIN05X4X  516C AT&T CORP. 332      
574-742 0 Osceola IN   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 332   2007-02-07   
574-742 1 Osceola IN   105F BANDWIDTH.COM CLEC, LLC - IN 332   2011-07-25   
574-742 2 Osceola IN   105F BANDWIDTH.COM CLEC, LLC - IN 332   2011-08-14   
574-742 3 Osceola IN   7440 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 332   2012-02-01   
574-742 4 Osceola IN   097D ONVOY, LLC - IN 332   2012-02-09   
574-742 5 Osceola IN   5562 METROPCS, INC. 332   2013-11-14   
574-742 6 Osceola IN   097D ONVOY, LLC - IN 332   2010-04-27   
574-742 7 Osceola IN   516C AT&T CORP. 332   2006-06-30   
574-742 8 Osceola IN   145J TERRA NOVA TELECOM INC. 332   2025-10-05   
574-742 9 Osceola IN   145J TERRA NOVA TELECOM INC. 332   2025-02-13   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.