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: 328

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-328 A Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558      
737-328 0 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-08-27   
737-328 1 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-08-27   
737-328 2 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-08-27   
737-328 3 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-08-27   
737-328 4 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-08-27   
737-328 5 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-08-27   
737-328 6 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-08-27   
737-328 7 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-08-27   
737-328 8 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-08-27   
737-328 9 Austin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-08-27   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.