Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Springport, MI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
517-692 A MDTPMICODS0  3535 ACD TELECOM, INC. - MI 346      
517-692 1   490J DISH WIRELESS, LLC 346   2022-08-28   
517-692 2   318J COMCAST IP PHONE, LLC 346   2025-06-29   
517-692 3   3535 ACD TELECOM, INC. - MI 346      
517-692 7   046L CLEAR RATE COMMUNICATIONS, LLC 346   2017-07-03   
517-857 A SPPTMIXIDS0  0728 SPRINGPORT TEL. CO. 346      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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