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: ELPSTXSHDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
915-538 1 El Paso TX 9533 SOUTHWESTERN BELL 540      
915-538 2 El Paso TX 9533 SOUTHWESTERN BELL 540      
915-538 3 El Paso TX 9533 SOUTHWESTERN BELL 540      
915-538 4 El Paso TX 9533 SOUTHWESTERN BELL 540      
915-832 2 El Paso TX 9533 SOUTHWESTERN BELL 540      
915-849 A El Paso TX 9533 SOUTHWESTERN BELL 540      
915-855 A El Paso TX 9533 SOUTHWESTERN BELL 540      
915-856 A El Paso TX 9533 SOUTHWESTERN BELL 540      
915-857 A El Paso TX 9533 SOUTHWESTERN BELL 540      
915-921 A El Paso TX 9533 SOUTHWESTERN BELL 540      

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.