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: 203

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
574-203 A Lapaz IN SBNDIN053MD  4803 LEVEL 3 COMMUNICATIONS, LLC - IN 332      
574-203 0 Lapaz IN SBNDIN053MD  4803 LEVEL 3 COMMUNICATIONS, LLC - IN 332      
574-203 1 Lapaz IN WKTPIN010MD  4117 FBN INDIANA, INC. - IN 332      
574-203 2 Lapaz IN SBNDIN01XHX  105F BANDWIDTH.COM CLEC, LLC - IN 332      
574-203 3 Lapaz IN PLMOINXAPMD  874F MCC TELEPHONY OF THE MID-WEST, LLC - IN 332      
574-203 4 Lapaz IN SBNDIN053MD  4803 LEVEL 3 COMMUNICATIONS, LLC - IN 332      
574-203 5 Lapaz IN SBNDIN01XHX  105F BANDWIDTH.COM CLEC, LLC - IN 332      
574-203 6 Lapaz IN SBNDIN13DS0  279F PEERLESS NETWORK OF INDIANA, LLC - IN 332      
574-203 7 Lapaz IN PLMOINXAXMD  508J CENTURYLINK COMMUNICATIONS, LLC 332      
574-203 8 Lapaz IN PLMOINXAX2X  097D ONVOY, LLC - IN 332      
574-203 9 Lapaz IN SBNDIN053MD  4803 LEVEL 3 COMMUNICATIONS, LLC - IN 332      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.