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: WASHDC12MMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-266 2 Washington Zone 14 MD 516J TON80 COMMUNICATIONS, LLC 236      
240-273 9 Washington Zone 6 MD 516J TON80 COMMUNICATIONS, LLC 236      
240-331 2 Washington Zone 3 MD 516J TON80 COMMUNICATIONS, LLC 236      
240-572 7 Leonardtown MD 516J TON80 COMMUNICATIONS, LLC 236      
240-746 3 Brandywine MD 516J TON80 COMMUNICATIONS, LLC 236      
240-768 6 Nanjemoy MD 516J TON80 COMMUNICATIONS, LLC 236      
240-789 5 Washington Zone 10 MD 516J TON80 COMMUNICATIONS, LLC 236      
240-798 4 Gaithersburg MD 516J TON80 COMMUNICATIONS, LLC 236      
240-853 6 Laurel MD 516J TON80 COMMUNICATIONS, LLC 236      
240-861 2 Ashton MD 516J TON80 COMMUNICATIONS, LLC 236      
571-567 3 Washington Zone 19 VA 516J TON80 COMMUNICATIONS, LLC 236      
571-574 7 Washington Zone 17 VA 516J TON80 COMMUNICATIONS, LLC 236      
571-688 A Independent Hill VA 516J TON80 COMMUNICATIONS, LLC 236      
571-688 8 Independent Hill VA 516J TON80 COMMUNICATIONS, LLC 236      
571-742 A Dulles Metro VA 516J TON80 COMMUNICATIONS, LLC 236      
571-742 6 Dulles Metro VA 516J TON80 COMMUNICATIONS, LLC 236      
571-746 A Dulles VA 516J TON80 COMMUNICATIONS, LLC 236      
571-746 7 Dulles VA 516J TON80 COMMUNICATIONS, LLC 236      
571-786 3 Herndon VA 516J TON80 COMMUNICATIONS, LLC 236      
571-832 A Braddock VA 516J TON80 COMMUNICATIONS, LLC 236      
571-832 4 Braddock VA 516J TON80 COMMUNICATIONS, LLC 236      
703-722 9 Arcola VA 516J TON80 COMMUNICATIONS, LLC 236      
703-872 2 Washington Zone 8 VA 516J TON80 COMMUNICATIONS, LLC 236      

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

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