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: 568

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
956-568 A Laredo TX SNANTXCAY9X  793K TWC IP ENABLED SERVICES, LLC 566      

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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