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: HSTNTX01DS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-201 A Sugar Land TX 7421 AT&T - LOCAL 560      
281-201 9 Sugar Land TX 7421 AT&T - LOCAL 560      
281-206 A Barker TX 7421 AT&T - LOCAL 560      
281-206 9 Barker TX 7421 AT&T - LOCAL 560      
281-248 A Bammel TX 7421 AT&T - LOCAL 560      
281-248 0 Bammel TX 7421 AT&T - LOCAL 560      
281-310 A Houston Suburban TX 7421 AT&T - LOCAL 560      
281-310 2 Houston Suburban TX 7421 AT&T - LOCAL 560      
281-310 3 Houston Suburban TX 7421 AT&T - LOCAL 560      
281-310 9 Houston Suburban TX 7421 AT&T - LOCAL 560      
281-466 5 Spring EMS TX 7421 AT&T - LOCAL 560   2002-10-08   
281-645 7 Westfield TX 7421 AT&T - LOCAL 560   2002-03-13   
281-817 3 Deer Park TX 7421 AT&T - LOCAL 560   2002-01-18   
713-577 A Houston TX 7421 AT&T - LOCAL 560      
713-577 0 Houston TX 7421 AT&T - LOCAL 560      
713-577 1 Houston TX 7421 AT&T - LOCAL 560      
713-577 2 Houston TX 7421 AT&T - LOCAL 560      
713-577 3 Houston TX 7421 AT&T - LOCAL 560      
713-577 4 Houston TX 7421 AT&T - LOCAL 560      
713-577 5 Houston TX 7421 AT&T - LOCAL 560      
713-577 6 Houston TX 7421 AT&T - LOCAL 560      
713-577 7 Houston TX 7421 AT&T - LOCAL 560      
713-577 8 Houston TX 7421 AT&T - LOCAL 560      
832-261 A Seabrook TX 7421 AT&T - LOCAL 560      
832-261 2 Seabrook TX 7421 AT&T - LOCAL 560      

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

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