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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OCN: 612K CSC VOICE, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
631-388 5 Brentwood NY   132   2010-12-23   
631-392 A Deer Park NY   132      
631-392 0 Deer Park NY   132   2006-04-07   
631-392 1 Deer Park NY   132   2006-04-07   
631-392 4 Deer Park NY   132   2007-11-08   
631-400 9 Center Moriches NY   132   2013-03-30   
631-403 4 Port Jefferson NY   132   2007-11-08   
631-406 6 Smithtown NY   132   2007-10-31   
631-406 7 Smithtown NY   132   2007-10-12   
631-407 5 Southold NY   132   2013-07-21   
631-412 3 Lindenhurst NY   132   2002-06-11   
631-412 5 Lindenhurst NY   132   2003-07-14   
631-414 7 Farmingdale NY   132      
631-415 4 Central Islip NY   132   2007-11-08   
631-419 6 Bayport NY   132   2007-11-17   
631-438 0 Patchogue NY   132   2011-10-21   
631-446 A Islip NY   132      
631-446 1 Islip NY   132   2007-11-08   
631-446 4 Islip NY   132   2007-07-29   
631-448 7 Yaphank NY   132   2013-04-29   
631-448 8 Yaphank NY   132   2013-01-03   
631-450 4 Lindenhurst NY   132   2012-10-14   
631-456 5 Brentwood NY   132   2006-09-23   
631-464 4 Amityville NY   132   2011-10-27   
631-468 8 Ronkonkoma NY   132   2011-09-04   
631-477 6 Greenport (Suffolk) NY   132   2003-07-02   
631-482 A Babylon NY   132      
631-482 1 Babylon NY   132   2007-10-12   
631-482 8 Babylon NY   132   2007-05-20   
631-482 9 Babylon NY   132   2007-05-20   
631-486 2 West Commack NY   132      
631-486 4 West Commack NY   132      
631-486 6 West Commack NY   132      
631-486 8 West Commack NY   132      
631-486 9 West Commack NY   132      
631-488 A Southampton NY   132      
631-488 4 Southampton NY   132   2010-05-26   
631-496 9 Selden NY   132   2013-04-05   
631-498 6 Cold Spring Harbor NY   132   2014-02-24   
631-500 9 Water Mill NY   132   2013-07-21   
631-504 6 Yaphank NY   132   2006-07-14   
631-509 A Port Jefferson NY   132      
631-509 0 Port Jefferson NY   132   2007-07-19   
631-509 1 Port Jefferson NY   132   2007-07-19   
631-509 4 Port Jefferson NY   132   2011-10-27   
631-509 5 Port Jefferson NY   132   2006-10-12   
631-509 6 Port Jefferson NY   132   2006-10-12   
631-521 7 Brentwood NY   132   2004-06-07   
631-522 A Deer Park NY   132      
631-522 1 Deer Park NY   132   2009-05-24   
631-524 5 Brentwood NY   132   2011-09-09   
631-526 9 Babylon NY   132   2015-06-28   
631-527 A East Hampton NY   132      
631-527 5 East Hampton NY   132   2012-07-14   
631-527 7 East Hampton NY   132   2011-07-25   
631-532 5 Amityville NY   132   2006-03-25   
631-532 6 Amityville NY   132   2007-10-12   
631-539 2 Babylon NY   132   2003-07-14   
631-539 4 Babylon NY   132      
631-539 6 Babylon NY   132      
631-539 7 Babylon NY   132      
631-539 8 Babylon NY   132      
631-539 9 Babylon NY   132      
631-557 3 Amagansett NY   132   2018-08-10   
631-562 A Patchogue NY   132      
631-569 2 Patchogue NY   132   2007-09-08   
631-569 4 Patchogue NY   132   2007-11-17   
631-569 5 Patchogue NY   132   2006-11-09   
631-573 A Sayville NY   132      
631-573 6 Sayville NY   132   2013-09-05   
631-573 8 Sayville NY   132   2011-12-08   
631-583 3 Fire Island NY   132   2003-09-02   
631-591 0 Riverhead NY   132      
631-591 1 Riverhead NY   132      
631-591 2 Riverhead NY   132      
631-591 3 Riverhead NY   132      
631-594 A Hampton Bays NY   132      
631-594 1 Hampton Bays NY   132      
631-594 2 Hampton Bays NY   132      
631-594 3 Hampton Bays NY   132      
631-594 5 Hampton Bays NY   132   2010-07-22   
631-604 A East Hampton NY   132      
631-604 1 East Hampton NY   132   2008-08-08   
631-604 2 East Hampton NY   132   2007-06-16   
631-604 5 East Hampton NY   132   2006-05-15   
631-604 6 East Hampton NY   132   2007-08-26   
631-606 A Northport NY   132      
631-606 5 Northport NY   132   2009-06-18   
631-613 6 Bridgehampton NY   132   2003-07-13   
631-615 2 Ronkonkoma NY   132   2007-10-12   
631-615 6 Ronkonkoma NY   132   2007-10-12   
631-617 5 Brentwood NY   132   2006-11-12   
631-617 6 Brentwood NY   132   2006-11-12   
631-619 6 Ronkonkoma NY   132   2007-08-17   
631-620 3 Babylon NY   132   2011-10-21   
631-623 6 West Commack NY   132   2007-11-08   
631-627 3 Patchogue NY   132   2005-12-29   
631-627 6 Patchogue NY   132   2005-12-25   
631-627 8 Patchogue NY   132   2005-12-29   
631-629 A Huntington NY   132      

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Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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