Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: SFLDMI18DS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
248-621 A Southfield MI 2550 123.NET, LLC 340      
248-621 0 Southfield MI 2550 123.NET, LLC 340   2015-10-08   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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