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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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
571-526 9 Herndon VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2013-10-01   
571-560 5 Washington Zone 8 VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2022-09-25   
571-759 A Herndon VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2026-06-19   
571-759 1 Herndon VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2026-06-19   
571-781 7 Nokesville VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-12   
571-888 7 Dulles VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-25   
703-260 4 Dulles Metro VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2018-05-29   
703-454 7 Engleside VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-25   
703-520 8 Braddock VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2013-10-01   
703-537 2 Washington Zone 19 VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2013-10-01   
703-649 7 Triangle VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2013-10-01   
703-743 6 Haymarket VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-25   
703-775 6 Lorton Metro VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2018-04-14   
703-775 7 Lorton Metro VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-12   
703-940 8 Washington Zone 17 VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2013-10-01   
703-972 7 Dulles Metro VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2014-06-12   
703-997 3 Washington Zone 8 VA 508J CENTURYLINK COMMUNICATIONS, LLC 236   2013-10-01   

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

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