Local Calling Guide

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NPA: 571 [Rate centres in NPA 571] [Dial plan for NPA 571]

NXX: 720

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-720 A Herndon VA   138E ONVOY, LLC - VA 236   2025-05-10   
571-720 0 Herndon VA   138E ONVOY, LLC - VA 236   2025-05-10   
571-720 1 Herndon VA   079F BANDWIDTH.COM CLEC, LLC - VA 236   2025-05-12   
571-720 2 Herndon VA   6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2025-08-22   
571-720 3 Herndon VA   6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2025-08-22   
571-720 4 Herndon VA   6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2025-08-22   
571-720 5 Herndon VA   6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2025-08-22   
571-720 6 Herndon VA   073H TELNYX LLC 236   2025-06-27   
571-720 7 Herndon VA   6827 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - VA 236   2025-08-22   
571-720 8 Herndon VA   138E ONVOY, LLC - VA 236   2025-10-18   
571-720 9 Herndon VA   138E ONVOY, LLC - VA 236   2025-09-28   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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