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: 870

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-870 A Leesburg VA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 246   2026-09-29   
571-870 4 Leesburg VA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 246   2026-09-29   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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