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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-431 A Brownsville TX   903C ONVOY, LLC - TX 568      
956-431 0 Brownsville TX   903C ONVOY, LLC - TX 568   2017-05-19   
956-431 1 Brownsville TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2019-10-06   
956-431 2 Brownsville TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2019-10-06   
956-431 3 Brownsville TX   7148 TELEPORT COMMUNICATIONS GROUP - DALLAS 568   2018-01-15   
956-431 4 Brownsville TX   7148 TELEPORT COMMUNICATIONS GROUP - DALLAS 568   2018-01-15   
956-431 5 Brownsville TX   7148 TELEPORT COMMUNICATIONS GROUP - DALLAS 568   2018-01-15   
956-431 6 Brownsville TX   7148 TELEPORT COMMUNICATIONS GROUP - DALLAS 568   2018-01-15   
956-431 7 Brownsville TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2019-10-06   
956-431 8 Brownsville TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2019-10-06   
956-431 9 Brownsville TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 568   2019-10-06   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.