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: SANGTXXBDS0

Remotes:

Switch Switch name Switch type
BRNHTXXAL01  BARNHART  GTR 
CRLBTXXAL01  CARLSBAD  GTR 
MTZNTXXARS0  MERTZON  GTR 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
325-223 A San Angelo TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-224 A San Angelo TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-245 2 San Angelo TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961   2010-03-06   
325-245 4 San Angelo TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961   2004-07-02   
325-942 A San Angelo TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-944 A San Angelo TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-947 A San Angelo TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      
325-949 A San Angelo TX 4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 961      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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