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: 901 [Rate centres in NPA 901] [Dial plan for NPA 901]

NXX: 670

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
901-670 A Memphis TN MMPHTNMAY4X  624H ONVOY SPECTRUM, LLC 468      
901-670 0 Memphis TN   624H ONVOY SPECTRUM, LLC 468   2022-10-18   
901-670 1 Memphis TN   624H ONVOY SPECTRUM, LLC 468   2022-10-18   
901-670 2 Memphis TN   624H ONVOY SPECTRUM, LLC 468   2022-10-18   
901-670 3 Memphis TN   624H ONVOY SPECTRUM, LLC 468   2022-10-18   
901-670 4 Memphis TN   624H ONVOY SPECTRUM, LLC 468   2022-10-18   
901-670 5 Memphis TN   624H ONVOY SPECTRUM, LLC 468   2022-10-18   
901-670 6 Memphis TN   624H ONVOY SPECTRUM, LLC 468   2022-10-18   
901-670 7 Memphis TN   624H ONVOY SPECTRUM, LLC 468   2022-10-18   
901-670 8 Memphis TN   624H ONVOY SPECTRUM, LLC 468   2022-10-18   
901-670 9 Memphis TN   624H ONVOY SPECTRUM, LLC 468   2022-10-18   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.