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: 227 [Rate centres in NPA 227] [Dial plan for NPA 227]

NXX: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-221 A Smithsburg MD HGTWMD539MD  939H COMMIO, LLC 240   2024-01-25   
227-221 0 Smithsburg MD HGTWMD539MD  939H COMMIO, LLC 240      
227-221 1 Smithsburg MD HGTWMD539MD  939H COMMIO, LLC 240      
227-221 2 Smithsburg MD HGTWMD539MD  939H COMMIO, LLC 240      
227-221 3 Smithsburg MD HGTWMD539MD  939H COMMIO, LLC 240      
227-221 4 Smithsburg MD HGTWMD539MD  939H COMMIO, LLC 240      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.