Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 450 [Rate centres in NPA 450] [Dial plan for NPA 450]

NXX: 520

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
450-520 A Saint-Chrysostome QC CTGYPQ131MD  4727 ISP TELECOM, INC. 888 805010    

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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