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: 489

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-489 A Hampstead MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-08-04   
667-489 0 Hampstead MD BLTMMDCH42Z  876D ONVOY, LLC - MD 238   2024-08-04   
667-489 1 Hampstead MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238   2025-05-17   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.