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.

Switch: ARGYTXXBRS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
940-240 A Argyle PPCP TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-240 0 Argyle PPCP TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-240 1 Argyle PPCP TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-240 5 Argyle PPCP TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-464 A Argyle TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-464 0 Argyle TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-464 2 Argyle TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-464 3 Argyle TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-464 4 Argyle TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      
940-464 7 Argyle TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 552      

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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