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: 857

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-857 A Laredo TX SNANTXDIRMD  903C ONVOY, LLC - TX 566      
956-857 0 Laredo TX SNANTXDIRMD  903C ONVOY, LLC - TX 566      
956-857 1 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566      
956-857 2 Laredo TX SNANTX91X7Y  4290 STPCS JOINT VENTURE, LLC 566      
956-857 3 Laredo TX SNANTXCA34Z  004F BANDWIDTH.COM CLEC, LLC - TX 566      
956-857 4 Laredo TX SNANTX39TMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566      
956-857 5 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
956-857 6 Laredo TX SNANTXDIRMD  903C ONVOY, LLC - TX 566      
956-857 7 Laredo TX SNANTX39TMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 566      
956-857 8 Laredo TX SNANTX78GT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566      
956-857 9 Laredo TX SNANTXDIRMD  903C ONVOY, LLC - TX 566      

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.