Local Calling Guide

Area code/prefix search

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NPA: 979 [Rate centres in NPA 979] [Dial plan for NPA 979]

NXX: 843

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
979-843 A Markham TX MRHMTXXARS0  2076 GANADO TEL. CO., INC. 560      

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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