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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-300 A Austin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
737-300 0 Austin TX   903C ONVOY, LLC - TX 558   2015-05-25   
737-300 1 Austin TX   793K TWC IP ENABLED SERVICES, LLC 558   2015-06-12   
737-300 2 Austin TX   793K TWC IP ENABLED SERVICES, LLC 558   2015-06-12   
737-300 3 Austin TX   903C ONVOY, LLC - TX 558   2015-05-25   
737-300 4 Austin TX   793K TWC IP ENABLED SERVICES, LLC 558   2015-06-12   
737-300 5 Austin TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2015-07-02   
737-300 6 Austin TX   903C ONVOY, LLC - TX 558   2015-05-25   
737-300 7 Austin TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2015-07-02   
737-300 8 Austin TX   903C ONVOY, LLC - TX 558   2015-06-12   
737-300 9 Austin TX   903C ONVOY, LLC - TX 558   2015-05-25   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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