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: 243

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
903-243 A Sulphur Springs TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
903-243 0 Sulphur Springs TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
903-243 1 Sulphur Springs TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
903-243 2 Sulphur Springs TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
903-243 3 Sulphur Springs TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
903-243 4 Sulphur Springs TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552      
903-243 5 Sulphur Springs TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2004-07-16   
903-243 6 Sulphur Springs TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2004-07-16   
903-243 7 Sulphur Springs TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2005-08-07   
903-243 8 Sulphur Springs TX CRTNTX35G03  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 552   2006-01-29   
903-243 9 Sulphur Springs TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552   2011-02-25   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.