Local Calling Guide

Area code/prefix search

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

NXX: 757

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
571-757 A Washington Zone 19 VA   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2026-06-29   
571-757 6 Washington Zone 19 VA   7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2026-06-29   

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

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