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: 398

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-398 A Port Deposit MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238      
667-398 0 Port Deposit MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-04-23   
667-398 1 Port Deposit MD BLTMMDCH45Z  071F BANDWIDTH.COM CLEC, LLC - MD 238   2022-04-24   
667-398 9 Port Deposit MD BLTMMDCHX7X  073H TELNYX LLC 238   2022-12-26   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.