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: 392

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-392 A San Marcos TX SMRCTXXAWMD  506J TWILIO INTERNATIONAL, INC. 558   2024-12-16   
737-392 0 San Marcos TX SMRCTXXAYMD  903C ONVOY, LLC - TX 558   2024-08-01   
737-392 1 San Marcos TX SMRCTXXAYMD  903C ONVOY, LLC - TX 558   2024-08-02   
737-392 2 San Marcos TX AUSUTX78AMD  6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2024-12-25   
737-392 3 San Marcos TX SMRCTXXAWMD  506J TWILIO INTERNATIONAL, INC. 558   2024-12-17   
737-392 6 San Marcos TX   6506 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX 558   2025-06-19   
737-392 8 San Marcos TX   903C ONVOY, LLC - TX 558   2025-02-02   
737-392 9 San Marcos TX   903C ONVOY, LLC - TX 558   2025-05-10   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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