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: 585

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
713-585 A Houston TX HSTNTXNADS1  9533 SOUTHWESTERN BELL 560      
713-585 0 Houston TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-05-02   
713-585 1 Houston TX HSTNTX01G04  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2007-01-05   
713-585 2 Houston TX HSTNTXNADS1  9533 SOUTHWESTERN BELL 560      
713-585 3 Houston TX HSTNTXNADS1  9533 SOUTHWESTERN BELL 560      
713-585 4 Houston TX HSTNTXNADS1  9533 SOUTHWESTERN BELL 560      
713-585 5 Houston TX HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2007-12-03   
713-585 6 Houston TX HSTDTXBGBMD  6701 AERIAL COMMUNICATIONS, INC. 560   2007-06-18   
713-585 7 Houston TX HSTNTXNADS1  9533 SOUTHWESTERN BELL 560      
713-585 8 Houston TX HSTNTXNADS1  9533 SOUTHWESTERN BELL 560      
713-585 9 Houston TX HSTNTXNADS1  9533 SOUTHWESTERN BELL 560      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.