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: 207

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
574-207 A Knox IN SBNDIN053MD  4803 LEVEL 3 COMMUNICATIONS, LLC - IN 332      
574-207 0 Knox IN SBNDIN053MD  4803 LEVEL 3 COMMUNICATIONS, LLC - IN 332      
574-207 1 Knox IN WKTPIN010MD  4117 FBN INDIANA, INC. - IN 332   2004-04-11   
574-207 2 Knox IN PLMOINXAX2X  097D ONVOY, LLC - IN 332   2021-09-04   
574-207 3 Knox IN PLMOINXAQMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 332   2009-09-27   
574-207 4 Knox IN SBNDIN053MD  4803 LEVEL 3 COMMUNICATIONS, LLC - IN 332   2004-09-02   
574-207 5 Knox IN PLMOINXAPMD  874F MCC TELEPHONY OF THE MID-WEST, LLC - IN 332   2010-07-10   
574-207 6 Knox IN SBNDIN01XHX  105F BANDWIDTH.COM CLEC, LLC - IN 332   2015-11-14   
574-207 7 Knox IN PLMOINXAXMD  508J CENTURYLINK COMMUNICATIONS, LLC 332   2014-04-20   
574-207 8 Knox IN SBNDIN01X4Y  6725 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IN 332   2018-03-19   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.