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: SNANTXCAXBZ

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
830-325 A Eagle Pass TX 516C AT&T CORP. 566   2006-06-30   
830-837 A New Braunfels TX 516C AT&T CORP. 566   2006-02-27   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.