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: 229

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-229 A Laredo TX SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
956-229 0 Laredo TX SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
956-229 1 Laredo TX SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2004-05-16   
956-229 2 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-09-10   
956-229 3 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-09-10   
956-229 4 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2007-09-10   
956-229 5 Laredo TX SNANTX91X3Y  5562 METROPCS, INC. 566   2009-06-20   
956-229 6 Laredo TX SNANTXCADS7  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 566   2004-09-01   
956-229 7 Laredo TX SNANTX91X3Y  5562 METROPCS, INC. 566   2009-06-27   
956-229 8 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2006-09-14   
956-229 9 Laredo TX SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.