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: 793

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-793 A Washington Zone 19 VA   138E ONVOY, LLC - VA 236   2026-12-20   
571-793 0 Washington Zone 19 VA   138E ONVOY, LLC - VA 236   2026-12-20   
571-793 1 Washington Zone 19 VA   138E ONVOY, LLC - VA 236   2026-12-20   
571-793 2 Washington Zone 19 VA   138E ONVOY, LLC - VA 236   2026-12-20   
571-793 3 Washington Zone 19 VA   138E ONVOY, LLC - VA 236   2026-12-20   

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

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