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: 281

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-281 A Austin TX AUSTTXGR58Z  515J IP HORIZON LLC 558      
737-281 0 Austin TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 558   2020-11-20   
737-281 1 Austin TX   515J IP HORIZON LLC 558   2020-11-19   
737-281 2 Austin TX   6114 LEVEL 3 COMMUNICATIONS, LLC - TX 558   2020-12-25   
737-281 3 Austin TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2021-01-29   
737-281 4 Austin TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2021-01-29   
737-281 5 Austin TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2021-01-29   
737-281 6 Austin TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2021-01-29   
737-281 7 Austin TX   5562 METROPCS, INC. 558   2021-01-02   
737-281 8 Austin TX   5562 METROPCS, INC. 558   2021-01-02   
737-281 9 Austin TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2021-01-29   

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

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