Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
810-407 6 Flint MI 318J COMCAST IP PHONE, LLC 340   2007-01-18   
810-407 7 Flint MI 318J COMCAST IP PHONE, LLC 340   2007-01-18   
810-407 8 Flint MI 318J COMCAST IP PHONE, LLC 340   2007-01-18   
810-410 4 Flint MI 318J COMCAST IP PHONE, LLC 340   2007-09-04   
810-412 9 Davison MI 318J COMCAST IP PHONE, LLC 340   2008-12-26   
810-420 0 Marine City MI 318J COMCAST IP PHONE, LLC 340   2005-03-23   
810-422 5 Flint MI 318J COMCAST IP PHONE, LLC 340   2007-09-04   
810-422 9 Flint MI 318J COMCAST IP PHONE, LLC 340   2007-09-04   
810-432 8 Port Huron MI 318J COMCAST IP PHONE, LLC 340   2016-12-15   
810-440 4 Clio-Mount Morris MI 318J COMCAST IP PHONE, LLC 340   2022-10-13   
810-442 3 Deckerville MI 318J COMCAST IP PHONE, LLC 340   2020-12-17   
810-475 3 Brown City MI 318J COMCAST IP PHONE, LLC 340   2020-12-17   
810-479 9 Port Huron MI 318J COMCAST IP PHONE, LLC 340   2005-03-23   
810-484 2 Flint MI 318J COMCAST IP PHONE, LLC 340   2016-10-21   
810-487 9 Flushing MI 318J COMCAST IP PHONE, LLC 340   2008-11-21   
810-498 4 Grand Blanc MI 318J COMCAST IP PHONE, LLC 340   2016-11-14   
810-512 4 Algonac MI 318J COMCAST IP PHONE, LLC 340   2005-06-27   
810-515 1 Flint MI 318J COMCAST IP PHONE, LLC 340   2007-01-30   
810-522 6 Brighton MI 318J COMCAST IP PHONE, LLC 340   2013-07-05   
810-547 1 Clio-Mount Morris MI 318J COMCAST IP PHONE, LLC 340   2006-02-12   
810-584 7 Grand Blanc MI 318J COMCAST IP PHONE, LLC 340   2010-09-14   
810-588 A Brighton MI 318J COMCAST IP PHONE, LLC 340      
810-588 4 Brighton MI 318J COMCAST IP PHONE, LLC 340   2008-06-02   
810-588 6 Brighton MI 318J COMCAST IP PHONE, LLC 340      
810-603 7 Grand Blanc MI 318J COMCAST IP PHONE, LLC 340   2013-09-08   
810-630 6 Swartz Creek MI 318J COMCAST IP PHONE, LLC 340   2005-10-07   
810-634 3 New Lothrop MI 318J COMCAST IP PHONE, LLC 340   2015-06-13   
810-637 8 St Clair MI 318J COMCAST IP PHONE, LLC 340   2005-11-15   
810-640 4 Clio-Mount Morris MI 318J COMCAST IP PHONE, LLC 340   2022-10-13   
810-640 7 Clio-Mount Morris MI 318J COMCAST IP PHONE, LLC 340   2008-04-26   
810-640 8 Clio-Mount Morris MI 318J COMCAST IP PHONE, LLC 340   2007-07-05   
810-642 7 Smiths Creek MI 318J COMCAST IP PHONE, LLC 340   2023-07-23   
810-644 7 Swartz Creek MI 318J COMCAST IP PHONE, LLC 340   2008-11-30   
810-645 7 Port Sanilac MI 318J COMCAST IP PHONE, LLC 340   2021-01-22   
810-655 0 Rankin MI 318J COMCAST IP PHONE, LLC 340   2006-02-17   
810-657 2 Carsonville MI 318J COMCAST IP PHONE, LLC 340   2020-12-18   
810-662 3 Port Huron MI 318J COMCAST IP PHONE, LLC 340   2015-07-20   
810-669 3 Capac MI 318J COMCAST IP PHONE, LLC 340   2020-12-17   
810-671 2 Algonac MI 318J COMCAST IP PHONE, LLC 340   2015-10-16   
810-671 3 Algonac MI 318J COMCAST IP PHONE, LLC 340   2011-12-06   
810-676 5 Marine City MI 318J COMCAST IP PHONE, LLC 340   2015-03-18   
810-682 4 Sandusky MI 318J COMCAST IP PHONE, LLC 340   2020-12-18   
810-715 9 Flint MI 318J COMCAST IP PHONE, LLC 340   2007-09-04   
810-746 9 Hartland MI 318J COMCAST IP PHONE, LLC 340   2014-01-24   
810-766 9 Flint MI 318J COMCAST IP PHONE, LLC 340   2007-09-04   
810-768 3 Flint MI 318J COMCAST IP PHONE, LLC 340   2007-09-04   
810-771 4 Grand Blanc MI 318J COMCAST IP PHONE, LLC 340   2008-04-14   
810-771 7 Grand Blanc MI 318J COMCAST IP PHONE, LLC 340   2007-07-23   
810-775 A Brighton MI 318J COMCAST IP PHONE, LLC 340      
810-775 3 Brighton MI 318J COMCAST IP PHONE, LLC 340   2014-11-14   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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