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: 447

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
667-447 A Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-447 0 Columbia MD   490J DISH WIRELESS, LLC 238      
667-447 1 Columbia MD   490J DISH WIRELESS, LLC 238      
667-447 2 Columbia MD   876D ONVOY, LLC - MD 238      
667-447 4 Columbia MD BLTQMD018MD  145J TERRA NOVA TELECOM INC. 238      
667-447 6 Columbia MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 238      
667-447 7 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      
667-447 8 Columbia MD   490J DISH WIRELESS, LLC 238      
667-447 9 Columbia MD BLTMMDCH40Z  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 238      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.