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: 387

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-387 A Perryville MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-387 0 Perryville MD   876D ONVOY, LLC - MD 238   2021-05-23   
667-387 1 Perryville MD   876D ONVOY, LLC - MD 238   2021-05-23   
667-387 2 Perryville MD   624H ONVOY SPECTRUM, LLC 238   2022-03-06   
667-387 3 Perryville MD   624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-387 4 Perryville MD   624H ONVOY SPECTRUM, LLC 238   2022-03-24   
667-387 5 Perryville MD   568G PEERLESS NETWORK OF MARYLAND, LLC 238   2022-01-28   
667-387 6 Perryville MD   876D ONVOY, LLC - MD 238   2021-05-23   
667-387 7 Perryville MD   876D ONVOY, LLC - MD 238   2021-05-22   
667-387 8 Perryville MD   876D ONVOY, LLC - MD 238   2021-05-23   
667-387 9 Perryville MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 238   2021-07-08   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.