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: 746

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
737-746 A Bertram TX   516J TON80 COMMUNICATIONS LLC 558   2022-03-16   
737-746 6 Bertram TX   516J TON80 COMMUNICATIONS LLC 558   2022-03-16   
737-746 7 Bertram TX   903C ONVOY, LLC - TX 558   2022-05-22   

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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