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: 333

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-333 A Austin TX AUSTTXGRDS3  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558      
737-333 0 Austin TX   6529 T-MOBILE USA, INC. 558   2013-07-02   
737-333 1 Austin TX   6529 T-MOBILE USA, INC. 558   2013-07-02   
737-333 2 Austin TX   6529 T-MOBILE USA, INC. 558   2013-07-02   
737-333 3 Austin TX   319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 558   2013-07-01   
737-333 4 Austin TX   6529 T-MOBILE USA, INC. 558   2013-07-02   
737-333 5 Austin TX   6529 T-MOBILE USA, INC. 558   2013-07-02   
737-333 6 Austin TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2014-07-13   
737-333 7 Austin TX   6529 T-MOBILE USA, INC. 558   2013-07-02   
737-333 8 Austin TX   6529 T-MOBILE USA, INC. 558   2013-07-02   
737-333 9 Austin TX   6529 T-MOBILE USA, INC. 558   2013-07-02   

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

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