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.
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Switch: WASHDC127MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
703-912 0 Washington Zone 17 VA 073H TELNYX LLC 236   2017-03-15   
703-952 9 Engleside VA 073H TELNYX LLC 236   2017-04-28   
771-222 0 Washington Zone 1 DC 073H TELNYX LLC 236   2022-07-22   
771-222 1 Washington Zone 1 DC 073H TELNYX LLC 236   2022-07-22   
771-222 3 Washington Zone 1 DC 073H TELNYX LLC 236   2022-07-22   
771-222 4 Washington Zone 1 DC 073H TELNYX LLC 236   2022-07-22   
771-222 5 Washington Zone 1 DC 073H TELNYX LLC 236   2022-07-22   
771-222 6 Washington Zone 1 DC 073H TELNYX LLC 236   2022-07-22   
771-222 7 Washington Zone 1 DC 073H TELNYX LLC 236   2022-07-22   
771-222 8 Washington Zone 1 DC 073H TELNYX LLC 236   2022-07-22   
771-222 9 Washington Zone 1 DC 073H TELNYX LLC 236   2022-07-22   
771-247 2 Washington Zone 1 DC 073H TELNYX LLC 236   2025-01-20   
771-247 3 Washington Zone 1 DC 073H TELNYX LLC 236   2025-01-20   
771-247 4 Washington Zone 1 DC 073H TELNYX LLC 236   2025-01-20   
771-247 9 Washington Zone 1 DC 073H TELNYX LLC 236   2025-01-20   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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