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: 336 [Rate centres in NPA 336] [Dial plan for NPA 336]

NXX: 974

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
336-974 A Ruffin NC GNBONCEU27Z  998E BANDWIDTH.COM CLEC, LLC - NC 424      
336-974 0 Ruffin NC GNBONCEU27Z  998E BANDWIDTH.COM CLEC, LLC - NC 424   2019-08-22   
336-974 1 Ruffin NC GNBPNCEM1MD  073H TELNYX LLC 424   2019-08-23   
336-974 2 Ruffin NC GNBONCPHX5X  939H COMMIO, LLC 424   2022-09-26   
336-974 3 Ruffin NC GNBONCEU24Z  638E ONVOY, LLC - NC 424   2022-12-30   
336-974 4 Ruffin NC GNBONCEU24Z  638E ONVOY, LLC - NC 424   2021-03-28   
336-974 5 Ruffin NC GNBONCEU24Z  638E ONVOY, LLC - NC 424   2021-03-28   
336-974 6 Ruffin NC GNBPNCEM8MD  516J TON80 COMMUNICATIONS, LLC 424   2021-07-04   
336-974 8 Ruffin NC GNBONCEU75Z  073H TELNYX LLC 424   2021-03-15   
336-974 9 Ruffin NC GNBONCEU78Z  624H ONVOY SPECTRUM, LLC 424   2023-05-12   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.