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: 771 [Rate centres in NPA 771] [Dial plan for NPA 771]

NXX: 224

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
771-224 A Washington Zone 1 DC WASHDC12X0X  598J FIVE9, INC. 236      
771-224 0 Washington Zone 1 DC WASHDC12X0X  598J FIVE9, INC. 236      
771-224 1 Washington Zone 1 DC BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
771-224 2 Washington Zone 1 DC BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
771-224 3 Washington Zone 1 DC BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
771-224 4 Washington Zone 1 DC BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
771-224 5 Washington Zone 1 DC BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
771-224 6 Washington Zone 1 DC BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
771-224 7 Washington Zone 1 DC BTVLMD18GT0  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236      
771-224 8 Washington Zone 1 DC VINNVACBDS0  850D ONVOY, LLC - DC 236      
771-224 9 Washington Zone 1 DC VINNVACBDS0  850D ONVOY, LLC - DC 236      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.