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.

China Spring, TX

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
254-836 7 WACOTX01XUY  793K TWC IP ENABLED SERVICES, LLC 556   2011-01-14   
254-836 8 WACOTXEY1MD  073H TELNYX LLC 556   2019-02-07   
254-836 9 WACOTXCSRS0  9533 SOUTHWESTERN BELL 556      

<< 1 2

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.