Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 231 [Rate centres in NPA 231] [Dial plan for NPA 231]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
231-427 A Mackinaw City MI GDRPMIBL07Z  516C AT&T CORP. 348   2011-10-01   
231-427 0 Mackinaw City MI   543C ONVOY, LLC - MI 348   2013-01-03   
231-427 1 Mackinaw City MI   116F PENINSULA FIBER NETWORK, LLC - MI 348   2015-06-18   
231-427 2 Mackinaw City MI   543C ONVOY, LLC - MI 348   2012-06-01   
231-427 3 Mackinaw City MI   770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 348   2016-10-10   
231-427 4 Mackinaw City MI   543C ONVOY, LLC - MI 348   2013-03-18   
231-427 5 Mackinaw City MI   543C ONVOY, LLC - MI 348   2016-03-23   
231-427 6 Mackinaw City MI   7575 CENTURYLINK COMMUNICATIONS LLC 348   2015-09-15   
231-427 7 Mackinaw City MI   516C AT&T CORP. 348   2011-10-01   
231-427 8 Mackinaw City MI   543C ONVOY, LLC - MI 348   2016-03-23   
231-427 9 Mackinaw City MI   933G PEERLESS NETWORK OF MICHIGAN, LLC - MI 348   2015-12-24   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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