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: SMRCTXXAH01

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
512-749 1 San Marcos TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558   2006-09-11   
512-757 8 San Marcos TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558   2006-03-20   
512-878 A San Marcos TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-878 0 San Marcos TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-878 1 San Marcos TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-878 2 San Marcos TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-878 4 San Marcos TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-878 5 San Marcos TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      
512-878 6 San Marcos TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558   2005-07-07   
512-878 8 San Marcos TX 7670 GRANDE COMMUNICATIONS NETWORKS, INC. - TX 558      

Last updated: Tue, 04 May 2021 15:04:27 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.