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: 220

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-220 A Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-01-07   
227-220 0 Waldorf MD SLSPMD913MD  939H COMMIO, LLC 236      
227-220 1 Waldorf MD SLSPMD913MD  939H COMMIO, LLC 236      
227-220 2 Waldorf MD SLSPMD913MD  939H COMMIO, LLC 236      
227-220 3 Waldorf MD SLSPMD913MD  939H COMMIO, LLC 236      
227-220 4 Waldorf MD   876D ONVOY, LLC - MD 236      
227-220 5 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-220 6 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
227-220 7 Waldorf MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
227-220 8 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236      
227-220 9 Waldorf MD BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.