Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 571 [Rate centres in NPA 571] [Dial plan for NPA 571]

NXX: 759

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-759 A Herndon VA   508J CENTURYLINK COMMUNICATIONS, LLC 236   2026-06-19   
571-759 0 Herndon VA   138E ONVOY, LLC - VA 236   2026-06-22   
571-759 1 Herndon VA   508J CENTURYLINK COMMUNICATIONS, LLC 236   2026-06-19   
571-759 4 Herndon VA   073H TELNYX LLC 236   2026-07-11   
571-759 9 Herndon VA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-06-22   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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