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: 713 [Rate centres in NPA 713] [Dial plan for NPA 713]

NXX: 556

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
713-556 A Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560      
713-556 0 Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560   2006-03-09   
713-556 1 Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560   2006-03-09   
713-556 2 Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560   2006-03-09   
713-556 3 Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560   2006-03-09   
713-556 4 Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560   2006-03-09   
713-556 5 Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560   2006-03-09   
713-556 6 Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560   2006-03-09   
713-556 7 Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560   2006-03-09   
713-556 8 Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560   2006-03-09   
713-556 9 Houston TX HSTNTXOVDS0  9533 SOUTHWESTERN BELL 560   2006-03-09   

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

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.