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: 903 [Rate centres in NPA 903] [Dial plan for NPA 903]

NXX: 364

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
903-364 A Whitewright TX WHWRTXXARS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
903-364 0 Whitewright TX WHWRTXXARS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
903-364 1 Whitewright TX WHWRTXXARS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
903-364 2 Whitewright TX WHWRTXXARS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
903-364 3 Whitewright TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2013-02-03   
903-364 4 Whitewright TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2012-02-10   
903-364 5 Whitewright TX WHWRTXXARS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
903-364 6 Whitewright TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2012-07-06   
903-364 7 Whitewright TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2009-03-08   
903-364 8 Whitewright TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2011-07-29   
903-364 9 Whitewright TX DLLRTXVM0MD  506J TWILIO INTERNATIONAL INC 552   2020-10-12   

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.