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: 888

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-888 A Mission TX HRLNTXHGBMD  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 568      
956-888 0 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2015-08-20   
956-888 1 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2015-08-20   
956-888 2 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2015-08-20   
956-888 4 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2015-08-20   
956-888 5 Mission TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2015-09-20   
956-888 6 Mission TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2015-09-20   
956-888 7 Mission TX HRLNTXHGX7X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2015-09-20   
956-888 8 Mission TX HRLNTXHGBMD  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 568   2015-08-16   
956-888 9 Mission TX HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2015-08-20   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.