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: 378

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
517-378 A Potterville MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346      
517-378 0 Potterville MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2021-12-23   
517-378 1 Potterville MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2021-12-23   
517-378 2 Potterville MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2021-12-23   
517-378 3 Potterville MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2021-12-23   
517-378 4 Potterville MI LNNGMIDC0MD  939H COMMIO, LLC 346   2022-12-03   
517-378 5 Potterville MI LNNGMIMN02Z  318J COMCAST IP PHONE, LLC 346   2022-09-19   
517-378 7 Potterville MI LNNGMIMN00Z  624H ONVOY SPECTRUM, LLC 346   2021-11-22   
517-378 8 Potterville MI LNNGMIMN00Z  624H ONVOY SPECTRUM, LLC 346   2021-11-22   
517-378 9 Potterville MI LNNGMIMNX4Z  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 346   2021-11-18   

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

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