Local Calling Guide

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NPA: 581 [Rate centres in NPA 581] [Dial plan for NPA 581]

NXX: 687

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
581-687 A Sainte-Brigitte-de-Laval QC QUBCPQ155MD  4727 ISP TELECOM, INC. 888 805027    

Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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