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: 244

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
771-244 A Washington Zone 1 DC   850D ONVOY, LLC - DC 236   2024-08-09   
771-244 0 Washington Zone 1 DC   850D ONVOY, LLC - DC 236   2024-08-09   
771-244 1 Washington Zone 1 DC   850D ONVOY, LLC - DC 236   2024-08-09   
771-244 2 Washington Zone 1 DC   850D ONVOY, LLC - DC 236   2024-08-09   
771-244 3 Washington Zone 1 DC   850D ONVOY, LLC - DC 236   2024-08-09   
771-244 4 Washington Zone 1 DC   850D ONVOY, LLC - DC 236   2024-08-09   
771-244 5 Washington Zone 1 DC   850D ONVOY, LLC - DC 236   2024-08-09   
771-244 6 Washington Zone 1 DC   074F BANDWIDTH.COM CLEC, LLC - DC 236   2024-08-10   
771-244 7 Washington Zone 1 DC   478J NUSO, LLC 236   2024-08-10   
771-244 8 Washington Zone 1 DC   478J NUSO, LLC 236   2024-08-10   
771-244 9 Washington Zone 1 DC   478J NUSO, LLC 236   2024-08-10   

Last updated: Sun, 06 Oct 2024 02:51:32 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.