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: 338

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-338 A Elgin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558      
737-338 0 Elgin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2021-01-24   
737-338 1 Elgin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2021-09-30   
737-338 2 Elgin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2021-09-30   
737-338 3 Elgin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2024-03-02   
737-338 4 Elgin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2022-03-27   
737-338 5 Elgin TX AUSTTXGR58Z  515J IP HORIZON LLC 558   2021-03-18   
737-338 6 Elgin TX AUSTTXGRDS6  177F PEERLESS NETWORK OF TEXAS, LLC - TX 558   2021-01-24   
737-338 7 Elgin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2021-01-23   
737-338 8 Elgin TX AUSTTXGR03Z  903C ONVOY, LLC - TX 558   2021-01-23   
737-338 9 Elgin TX AUSWTXGXBMD  6529 T-MOBILE USA, INC. 558   2021-09-30   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.