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: 370

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
289-370 A Cayuga ON CYGAONAT2MD  8304 ALLSTREAM INC. 888 805132    

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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