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.
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Switch: GNZLLAXADS4

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
225-386 A Plaquemine LA 8839 ADVANCED TEL., INC. - LA 492      
225-392 A Zachary LA 8839 ADVANCED TEL., INC. - LA 492      
225-408 A Baton Rouge LA 8839 ADVANCED TEL., INC. - LA 492      
225-600 A Maurepas LA 8839 ADVANCED TEL., INC. - LA 492      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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