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: 830 [Rate centres in NPA 830] [Dial plan for NPA 830]

NXX: 857

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
830-857 A Gonzales TX GNZLTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-857 0 Gonzales TX GNZLTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-857 1 Gonzales TX GNZLTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-857 2 Gonzales TX GNZLTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      
830-857 3 Gonzales TX SNANTXCA55Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
830-857 4 Gonzales TX SNANTXCA55Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
830-857 5 Gonzales TX SNANTXCA55Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
830-857 6 Gonzales TX SNANTXCA55Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
830-857 7 Gonzales TX SNANTX91X2Y  5562 METRO PCS, INC. 566   2016-07-08   
830-857 8 Gonzales TX GNZLTXXADS0  4344 FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS 566      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.