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: 252

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-252 A Addison MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346      
517-252 0 Addison MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346      
517-252 1 Addison MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2011-06-15   
517-252 2 Addison MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2015-10-09   
517-252 3 Addison MI ADSNMIXI3MD  558A DEERFIELD FARMERS' TELEPHONE COMPANY - MI 346   2013-07-18   
517-252 4 Addison MI LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2004-07-16   
517-252 5 Addison MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2007-12-18   
517-252 6 Addison MI LNNGMIVE2MD  6120 LEVEL 3 COMMUNICATIONS, LLC - MI 346   2008-02-27   
517-252 7 Addison MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2007-03-05   
517-252 8 Addison MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2013-04-01   
517-252 9 Addison MI LNNGMIMNX5Z  543C ONVOY, LLCV - MI 346   2015-10-09   

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

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