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]

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-895 A Austin TX AUSTTXGR57Z  506J TWILIO INTERNATIONAL, INC. 558      
737-899 A Bastrop TX AUSTTXGR51Z  965H FRACTEL, LLC 558      
737-900 A Austin TX AUSTTXGR52Z  145J TERRA NOVA TELECOM INC. 558      
737-910 A Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
737-931 A Austin TX AUSTTXEE7MD  671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 558      
737-932 A Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
737-937 A Martindale TX SMRCTXXAYMD  903C ONVOY, LLC - TX 558      
737-946 A Adamsville TX AUSTTXGR51Z  965H FRACTEL, LLC 558      
737-973 A Briggs TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558      
737-975 A Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2024-12-05   
737-977 A Austin TX AUSTTXGR51Z  965H FRACTEL, LLC 558      
737-980 A Coupland TX AUSTTXGR46Z  158H INVOXIO INCORPORATED 558      
737-983 A Lockhart TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2024-12-27   
737-990 A Austin TX AUSTTXGR46Z  158H INVOXIO INCORPORATED 558      
737-999 A Buda TX AUSTTXGRDS3  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558      

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Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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