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: 312

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-312 A Kyle TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
737-312 0 Kyle TX AUSTTXGR45Z  624H ONVOY SPECTRUM, LLC 558   2022-01-09   
737-312 1 Kyle TX AUSTTXGR45Z  624H ONVOY SPECTRUM, LLC 558   2022-01-09   
737-312 2 Kyle TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2022-01-01   
737-312 3 Kyle TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2022-01-01   
737-312 4 Kyle TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2022-01-01   
737-312 5 Kyle TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2022-01-09   
737-312 6 Kyle TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2022-01-09   
737-312 7 Kyle TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2022-01-02   
737-312 8 Kyle TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2022-01-02   
737-312 9 Kyle TX AUSUTXNIGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 558   2022-01-02   

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.