Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 289 [Rate centres in NPA 289] [Dial plan for NPA 289]

NXX: 220

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
289-220 A Whitby ON OSHWON95X3X  464D FIBERNETICS CORPORATION 888 805118    

Last updated: Tue, 07 Oct 2025 16:47:53 UTC

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