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.

High Island, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
409-251 A BUMTTXTEX6Y  318C CEBRIDGE TELECOM TX , L.P. - TX 562      
409-251 5 BUMTTXTEX6Y  318C CEBRIDGE TELECOM TX , L.P. - TX 562   2022-08-29   
409-286 A HGISTXXADS0  0425 CAMERON TEL CO 562      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.