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: 754

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-754 A Washington Zone 8 VA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 236   2026-05-26   
571-754 2 Washington Zone 8 VA   671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 236   2026-05-26   

Last updated: Sat, 02 May 2026 12:20:53 UTC

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