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: 223

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-223 A Frederick MD HGTWMD539MD  939H COMMIO, LLC 240   2024-01-22   
227-223 0 Frederick MD HGTWMD539MD  939H COMMIO, LLC 240   2024-01-22   
227-223 1 Frederick MD HGTWMD539MD  939H COMMIO, LLC 240   2024-01-22   
227-223 2 Frederick MD HGTWMD539MD  939H COMMIO, LLC 240   2024-01-22   
227-223 3 Frederick MD HGTWMD53FMD  490J DISH WIRELESS, LLC 240   2024-01-23   
227-223 4 Frederick MD HGTWMD53FMD  490J DISH WIRELESS, LLC 240   2024-05-21   
227-223 8 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2024-01-28   
227-223 9 Frederick MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 240   2024-01-28   

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.