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: 254

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-254 A Austin TX   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558   2025-06-30   
737-254 0 Austin TX   732J NUSO, LLC 558   2025-07-07   
737-254 1 Austin TX   732J NUSO, LLC 558   2025-07-07   
737-254 2 Austin TX   732J NUSO, LLC 558   2025-07-07   
737-254 8 Austin TX   7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 558   2025-06-30   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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