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.

NPA: 737 [Rate centres in NPA 737] [Dial plan for NPA 737]

NXX: 973

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-973 A Briggs TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558      
737-973 0 Briggs TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558   2015-07-05   
737-973 1 Briggs TX AUSYTXFC0MD  004F BANDWIDTH.COM CLEC, LLC - TX 558   2018-08-16   
737-973 2 Briggs TX AUSTTXGRDS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 558   2018-10-30   
737-973 3 Briggs TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2015-10-05   
737-973 4 Briggs TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2020-04-04   
737-973 5 Briggs TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2020-04-04   
737-973 6 Briggs TX AUSTTXGRDS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 558   2018-11-16   
737-973 7 Briggs TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2015-10-05   
737-973 8 Briggs TX AUSTTXGRX3Y  073H TELNYX LLC 558   2018-10-19   
737-973 9 Briggs TX AUSTTXGR46Z  158H INVOXIO INCORPORATED 558   2018-08-05   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.