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: 242

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-242 A Laredo TX SNAQTXKY7MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566      
956-242 0 Laredo TX SNAQTXKY7MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566   2004-12-27   
956-242 1 Laredo TX SNANTX91X3Y  5562 METROPCS, INC. 566   2005-02-10   
956-242 2 Laredo TX SNANTX91X3Y  5562 METROPCS, INC. 566   2005-02-10   
956-242 3 Laredo TX SNANTX91X3Y  5562 METROPCS, INC. 566   2005-02-10   
956-242 4 Laredo TX SNAQTXKY7MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566      
956-242 5 Laredo TX SNANTX91X3Y  5562 METROPCS, INC. 566   2005-05-05   
956-242 6 Laredo TX SNAQTXKY7MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566   2005-09-17   
956-242 7 Laredo TX SNAQTXKY7MD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 566   2005-09-17   
956-242 8 Laredo TX SNANTX91X3Y  5562 METROPCS, INC. 566   2005-11-14   
956-242 9 Laredo TX SNANTX91X3Y  5562 METROPCS, INC. 566   2005-11-14   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.