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: 784

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
574-784 A Lapaz IN LAPZINXARS1  0832 BRIGHTSPEED OF INDIANA, LLC 332      
574-784 0 Lapaz IN LAPZINXARS1  0832 BRIGHTSPEED OF INDIANA, LLC 332      
574-784 1 Lapaz IN SBNDIN13DS0  279F PEERLESS NETWORK OF INDIANA, LLC - IN 332   2015-04-18   
574-784 2 Lapaz IN LAPZINXARS1  0832 BRIGHTSPEED OF INDIANA, LLC 332      
574-784 3 Lapaz IN LAPZINXARS1  0832 BRIGHTSPEED OF INDIANA, LLC 332      
574-784 4 Lapaz IN SBNDIN13HMD  939H COMMIO, LLC 332   2021-07-15   
574-784 5 Lapaz IN SBNDIN13HMD  939H COMMIO, LLC 332   2021-07-15   
574-784 6 Lapaz IN SBNDIN13HMD  939H COMMIO, LLC 332   2021-07-15   
574-784 7 Lapaz IN PLMOINXAX2X  097D ONVOY, LLC - IN 332   2021-09-04   
574-784 8 Lapaz IN LAPZINXARS1  0832 BRIGHTSPEED OF INDIANA, LLC 332      
574-784 9 Lapaz IN LAPZINXARS1  0832 BRIGHTSPEED OF INDIANA, LLC 332      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.