Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 737 [Rate centres in NPA 737] [Dial plan for NPA 737]

NXX: 381

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-381 A Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2024-05-09   
737-381 0 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2024-05-09   
737-381 1 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2024-05-09   
737-381 2 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2024-05-09   
737-381 3 Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2024-05-09   
737-381 7 Austin TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2024-05-10   
737-381 8 Austin TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2024-05-10   
737-381 9 Austin TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2024-05-10   

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

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