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.

Switch: WASHDC127MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-871 A Washington Zone 1 DC 073H TELNYX LLC 236      
202-989 A Washington Zone 1 DC 073H TELNYX LLC 236      
240-531 A Washington Zone 3 MD 073H TELNYX LLC 236      
240-828 A Washington Zone 4 MD 073H TELNYX LLC 236      
571-427 A Occoquan VA 073H TELNYX LLC 236      
571-655 A Braddock VA 073H TELNYX LLC 236      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.