Local Calling Guide

Area code/prefix search

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

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
956-987 9 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2024-07-25   
956-993 A HRLNTXHGXPX  515J IP HORIZON LLC 568   2025-06-01   
956-993 0 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-06-27   
956-993 1 HRLNTXHGXPX  515J IP HORIZON LLC 568   2025-06-01   
956-993 2 HRLNTXHGXPX  515J IP HORIZON LLC 568   2025-06-01   
956-993 3 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-07-10   
956-993 4 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-07-10   
956-993 5 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-07-10   
956-993 6 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-07-10   
956-993 7 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-07-10   
956-993 8 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-06-27   
956-993 9 HRLNTXKX8MD  4290 STPCS JOINT VENTURE, LLC 568   2025-06-27   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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