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: SANGTXXAY0X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
325-253 A San Angelo TX 425J CSC WIRELESS, LLC 961      
325-253 2 San Angelo TX 425J CSC WIRELESS, LLC 961   2019-05-11   
325-253 8 San Angelo TX 425J CSC WIRELESS, LLC 961   2019-06-06   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.