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.

NPA: 512 [Rate centres in NPA 512] [Dial plan for NPA 512]

NXX: 357

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
512-357 A Martindale TX MRDLTXXADS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 558      
512-357 0 Martindale TX MRDLTXXADS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 558      
512-357 1 Martindale TX MRDLTXXADS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 558      
512-357 2 Martindale TX MRDLTXXADS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 558      
512-357 3 Martindale TX SMRCTXXAYMD  903C ONVOY, LLC - TX 558      
512-357 4 Martindale TX   793K TWC IP ENABLED SERVICES, LLC 558      
512-357 5 Martindale TX   793K TWC IP ENABLED SERVICES, LLC 558      
512-357 6 Martindale TX MRDLTXXADS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 558      
512-357 7 Martindale TX SMRCTXXAYMD  903C ONVOY, LLC - TX 558      
512-357 8 Martindale TX AUSTTXGRDS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 558      
512-357 9 Martindale TX MRDLTXXADS0  2154 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 558      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.