Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 812 [Rate centres in NPA 812] [Dial plan for NPA 812]

NXX: 400

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
812-400 A Stanford IN CLMBIN01X2X  318J COMCAST IP PHONE, LLC 338      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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