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.

Switch: HSTNTX01DS3

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-205 2 Tomball TX 7421 AT&T - LOCAL 560   2003-09-23   
281-406 A Houston Suburban TX 7421 AT&T - LOCAL 560      
281-406 2 Houston Suburban TX 7421 AT&T - LOCAL 560      
281-406 9 Houston Suburban TX 7421 AT&T - LOCAL 560      
713-576 A Houston TX 7421 AT&T - LOCAL 560      
713-576 0 Houston TX 7421 AT&T - LOCAL 560      
713-576 1 Houston TX 7421 AT&T - LOCAL 560      
713-576 2 Houston TX 7421 AT&T - LOCAL 560      
713-576 3 Houston TX 7421 AT&T - LOCAL 560      
713-576 4 Houston TX 7421 AT&T - LOCAL 560      
713-576 5 Houston TX 7421 AT&T - LOCAL 560      
713-576 7 Houston TX 7421 AT&T - LOCAL 560      
713-576 8 Houston TX 7421 AT&T - LOCAL 560      

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.