Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 956 [Rate centres in NPA 956] [Dial plan for NPA 956]

NXX: 815

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-815 A Laredo TX SNANTXDIRMD  903C ONVOY, LLC - TX 566      
956-815 0 Laredo TX   903C ONVOY, LLC - TX 566   2016-02-08   
956-815 1 Laredo TX   903C ONVOY, LLC - TX 566   2016-02-08   
956-815 2 Laredo TX   903C ONVOY, LLC - TX 566   2016-02-08   
956-815 3 Laredo TX   073H TELNYX LLC 566   2017-03-22   
956-815 4 Laredo TX   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 566   2018-02-19   
956-815 5 Laredo TX   5562 METROPCS, INC. 566   2017-03-23   
956-815 6 Laredo TX   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 566   2018-02-19   
956-815 7 Laredo TX   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 566   2018-02-19   
956-815 8 Laredo TX   4290 STPCS JOINT VENTURE, LLC 566   2016-02-09   
956-815 9 Laredo TX   4290 STPCS JOINT VENTURE, LLC 566   2016-02-09   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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