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: 333

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
830-333 A Uvalde TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
830-333 0 Uvalde TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-08-26   
830-333 1 Uvalde TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2008-02-09   
830-333 2 Uvalde TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2008-06-28   
830-333 3 Uvalde TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2009-04-24   
830-333 4 Uvalde TX SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2014-11-27   
830-333 5 Uvalde TX SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2014-08-09   
830-333 6 Uvalde TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2009-09-06   
830-333 7 Uvalde TX SNANTXCA41Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 566   2010-01-04   
830-333 8 Uvalde TX SNANTXDIRMD  903C ONVOY, LLC - TX 566   2014-04-25   
830-333 9 Uvalde TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566   2009-02-21   

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.