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: 728

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-728 A Washington Zone 8 VA   114J EXIANT COMMUNICATIONS LLC 236   2025-07-13   
571-728 1 Washington Zone 8 VA   114J EXIANT COMMUNICATIONS LLC 236   2025-07-13   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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