Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 734 [Rate centres in NPA 734] [Dial plan for NPA 734]

NXX: 487

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
734-487 A Ypsilanti MI YPSLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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