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: 667 [Rate centres in NPA 667] [Dial plan for NPA 667]

NXX: 660

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-660 A Marion MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242      
667-660 4 Marion MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-10-17   
667-660 5 Marion MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2020-10-17   
667-660 6 Marion MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-12-11   
667-660 7 Marion MD SLBRMDSBXVX  876D ONVOY, LLC - MD 242   2019-12-11   
667-660 8 Marion MD SLBRMDSBX0X  624H ONVOY SPECTRUM, LLC 242   2021-05-27   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.