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.

Concepcion, TX

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
361-417 A CRCHTXTUXWY  508J CENTURYLINK COMMUNICATIONS, LLC 564      
361-417 7 CRCHTXTUXWY  508J CENTURYLINK COMMUNICATIONS, LLC 564   2016-05-06   
361-539 A CNCPTXXARS0  2159 VALLEY TEL. COOP., INC. 564      

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

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