Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: AUSUTXNIGT3

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
737-280 A Austin TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
737-291 A Austin TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
737-305 A Buda TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
737-306 A Hutto TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
737-330 A Austin TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
737-351 A Austin TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
737-368 A Austin TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2024-02-11   
737-382 A Austin TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2024-05-24   
737-393 A Austin TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2024-08-23   
737-395 A Austin TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2024-11-01   
737-406 A Austin TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2025-02-08   
737-701 A Austin TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
737-881 A Bastrop TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558      
737-983 A Lockhart TX 6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2024-12-27   

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Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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