Local Calling Guide

Area code/prefix search

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

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
956-999 6 SNANTX78G00  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 566   2013-07-27   
956-999 7 SNANTXTSDS0  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 566   2013-07-06   
956-999 8 SNANTXCADS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 566   2013-09-22   
956-999 9 SNANTXTSDS0  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 566   2013-07-06   

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Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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