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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-257 A San Gabriel TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558      
737-257 0 San Gabriel TX   004F BANDWIDTH.COM CLEC, LLC - TX 558   2019-07-04   
737-257 1 San Gabriel TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 558   2020-04-26   
737-257 2 San Gabriel TX   073H TELNYX LLC 558   2019-09-27   
737-257 3 San Gabriel TX   177F PEERLESS NETWORK OF TEXAS, LLC - TX 558   2020-06-30   
737-257 4 San Gabriel TX   903C ONVOY, LLC - TX 558   2020-08-16   
737-257 5 San Gabriel TX   903C ONVOY, LLC - TX 558   2020-08-16   
737-257 6 San Gabriel TX   903C ONVOY, LLC - TX 558   2020-08-16   
737-257 8 San Gabriel TX   903C ONVOY, LLC - TX 558   2020-11-23   
737-257 9 San Gabriel TX   903C ONVOY, LLC - TX 558   2020-11-23   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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