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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
771-244 6 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2024-08-10   
771-245 A Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2024-09-14   
771-245 0 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2024-09-14   
771-245 1 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2024-09-14   
771-245 2 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2024-09-14   
771-245 3 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2024-09-14   
771-777 3 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2022-01-10   
771-777 4 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2022-01-10   
771-777 5 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2022-01-10   
771-777 8 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2022-01-10   
771-777 9 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2022-01-10   
771-888 0 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2022-01-01   
771-888 1 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2022-01-01   
771-888 3 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2022-01-01   
771-888 4 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2022-01-01   
771-888 5 Washington Zone 1 DC 074F BANDWIDTH.COM CLEC, LLC - DC 236   2022-01-01   

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Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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