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: PTLVTXXAPS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
361-325 7 Falfurrias TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 564      
361-325 8 Falfurrias TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 564      
361-368 5 Odem TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 564      
361-487 A Port Lavaca TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 564      
361-487 4 Port Lavaca TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 564      
361-553 1 Port Lavaca TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 564      
361-584 4 Bishop TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 564      
361-785 6 Seadrift TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 564      

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

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