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: 423

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-423 A Austin TX   700J WAVENATION, LLC 558   2025-09-12   
737-423 0 Austin TX   700J WAVENATION, LLC 558   2025-09-12   
737-423 1 Austin TX   903C ONVOY, LLC - TX 558   2025-09-27   
737-423 2 Austin TX   903C ONVOY, LLC - TX 558   2025-09-27   
737-423 3 Austin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-10-03   
737-423 4 Austin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-10-03   
737-423 5 Austin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-10-03   
737-423 6 Austin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-10-03   
737-423 7 Austin TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-10-23   
737-423 8 Austin TX   903C ONVOY, LLC - TX 558   2025-10-18   
737-423 9 Austin TX   903C ONVOY, LLC - TX 558   2025-10-18   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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