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: 378

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-378 A Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-378 0 Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-378 1 Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-378 2 Essex MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238      
667-378 3 Essex MD BLTQMD01BMD  516J TON80 COMMUNICATIONS, LLC 238      
667-378 4 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-378 5 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-378 6 Essex MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238      
667-378 7 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-378 8 Essex MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-378 9 Essex MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.