Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 517 [Rate centres in NPA 517] [Dial plan for NPA 517]

NXX: 552

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-552 A Howell MI HOWLMIMNDS0  9323 MICHIGAN BELL TEL CO 340      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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