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: 956 [Rate centres in NPA 956] [Dial plan for NPA 956]

NXX: 452

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-452 A Laredo TX SNANTXDIX4X  197D VONAGE AMERICA LLC 566      
956-452 0 Laredo TX SNANTXCADS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 566      
956-452 1 Laredo TX SNAQTXKY7MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566      
956-452 2 Laredo TX SNANTXDIX4X  197D VONAGE AMERICA LLC 566      
956-452 3 Laredo TX SNANTXDIX4X  197D VONAGE AMERICA LLC 566      
956-452 4 Laredo TX SNANTXDIX4X  197D VONAGE AMERICA LLC 566      
956-452 5 Laredo TX SNANTXDIX4X  197D VONAGE AMERICA LLC 566      
956-452 6 Laredo TX SNANTXDIX4X  197D VONAGE AMERICA LLC 566      
956-452 7 Laredo TX SNANTXDIX4X  197D VONAGE AMERICA LLC 566      
956-452 8 Laredo TX SNANTXDIX4X  197D VONAGE AMERICA LLC 566      
956-452 9 Laredo TX SNANTXDIX4X  197D VONAGE AMERICA LLC 566      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.