Local Calling Guide

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NPA: 579 [Rate centres in NPA 579] [Dial plan for NPA 579]

NXX: 397

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
579-397 A Ormstown QC VYFDPQ472MD  4727 ISP TELECOM, INC. 888 805004    

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: Execulink Telecom

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