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: 779

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-779 A Washington Zone 8 VA   138E ONVOY, LLC - VA 236   2026-09-27   
571-779 0 Washington Zone 8 VA   138E ONVOY, LLC - VA 236   2026-09-27   
571-779 1 Washington Zone 8 VA   138E ONVOY, LLC - VA 236   2026-09-28   
571-779 2 Washington Zone 8 VA   079F BANDWIDTH.COM CLEC, LLC - VA 236   2026-10-16   
571-779 3 Washington Zone 8 VA   079F BANDWIDTH.COM CLEC, LLC - VA 236   2026-10-16   
571-779 4 Washington Zone 8 VA   079F BANDWIDTH.COM CLEC, LLC - VA 236   2026-10-16   
571-779 5 Washington Zone 8 VA   079F BANDWIDTH.COM CLEC, LLC - VA 236   2026-10-16   
571-779 6 Washington Zone 8 VA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-12   
571-779 7 Washington Zone 8 VA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-10-12   
571-779 8 Washington Zone 8 VA   6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2026-09-28   
571-779 9 Washington Zone 8 VA   6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2026-09-28   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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