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.

Bula, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
806-933 A MLSHTXXADS1  2071 FIVE AREA TEL. COOP., INC. 544      

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.