Local Calling Guide

Area code/prefix search

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NPA: 734 [Rate centres in NPA 734] [Dial plan for NPA 734]

NXX: 372

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
734-372 A Ann Arbor MI SFLDMIDC0MD  817J INTERACTIVE SERVICES NETWORK, INC. 340      

Last updated: Sun, 01 Nov 2026 02:11:49 UTC

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