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: 613

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-613 A Roma TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568      
956-613 0 Roma TX HRLNTXKX3MD  4290 STPCS JOINT VENTURE, LLC 568   2022-06-09   
956-613 1 Roma TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2023-10-15   
956-613 2 Roma TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2021-03-07   
956-613 3 Roma TX HRLNTXHGX1X  903C ONVOY, LLC - TX 568   2021-03-07   
956-613 4 Roma TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-12-04   
956-613 5 Roma TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-12-04   
956-613 6 Roma TX HRLNTXHGXKX  624H ONVOY SPECTRUM, LLC 568   2021-06-24   
956-613 7 Roma TX   903C ONVOY, LLC - TX 568   2024-03-03   
956-613 8 Roma TX HRLNTXHG8MD  073H TELNYX LLC 568   2021-04-08   
956-613 9 Roma TX HRLNTXKX3MD  4290 STPCS JOINT VENTURE, LLC 568   2022-06-09   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.