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: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-666 A West River MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-666 0 West River MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-06-13   
667-666 1 West River MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-06-13   
667-666 2 West River MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-08-05   
667-666 3 West River MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-08-05   
667-666 4 West River MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2018-05-31   
667-666 5 West River MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-03-25   
667-666 6 West River MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2016-06-02   
667-666 7 West River MD   2593 CORE COMMUNICATIONS, INC.- MD 238   2019-05-02   
667-666 8 West River MD BLTMMDCHX7X  073H TELNYX LLC 238   2017-04-26   
667-666 9 West River MD   515J IP HORIZON LLC 238   2016-10-14   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.