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: 999

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
830-999 A Catarina TX CTRNTXCRRS0  9533 SOUTHWESTERN BELL 566      
830-999 0 Catarina TX SNANTXDIRMD  903C ONVOY, LLC - TX 566      
830-999 1 Catarina TX CTRNTXCRRS0  9533 SOUTHWESTERN BELL 566      
830-999 2 Catarina TX SNANTXDIRMD  903C ONVOY, LLC - TX 566      
830-999 3 Catarina TX CTRNTXCRRS0  9533 SOUTHWESTERN BELL 566      
830-999 4 Catarina TX SNANTXDIRMD  903C ONVOY, LLC - TX 566      
830-999 5 Catarina TX SNANTXCA58Z  516C AT&T CORP. 566      
830-999 6 Catarina TX SNANTXDIRMD  903C ONVOY, LLC - TX 566      
830-999 7 Catarina TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566      
830-999 9 Catarina TX SNANTXCADS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 566      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.