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: 268

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-268 A Darlington MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-268 0 Darlington MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2019-08-16   
667-268 1 Darlington MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2021-01-11   
667-268 3 Darlington MD   624H ONVOY SPECTRUM, LLC 238   2021-05-22   
667-268 4 Darlington MD   071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-01-27   
667-268 5 Darlington MD   624H ONVOY SPECTRUM, LLC 238   2021-11-15   
667-268 6 Darlington MD   624H ONVOY SPECTRUM, LLC 238   2021-11-15   
667-268 7 Darlington MD   876D ONVOY, LLC - MD 238   2022-12-03   
667-268 8 Darlington MD   516J TON80 COMMUNICATIONS, LLC 238   2022-03-29   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.