Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Edinburg, TX

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
956-991 1   515J IP HORIZON LLC 568   2025-06-01   
956-991 2   515J IP HORIZON LLC 568   2025-06-01   
956-991 3   4290 STPCS JOINT VENTURE, LLC 568   2025-08-07   
956-991 4   4290 STPCS JOINT VENTURE, LLC 568   2025-08-07   
956-991 5   4290 STPCS JOINT VENTURE, LLC 568   2025-08-07   
956-991 6   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 568   2025-08-12   

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Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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