-<kbd>adns</kbd> is Copyright 1997-2000,2003,2006,2014 Ian Jackson,
-Copyright 2014 Mark Wooding, Copyright 1999-2000,2003,2006 Tony Finch,
-and Copyright (C) 1991 Massachusetts Institute of Technology.
+<kbd>adns</kbd> is Copyright 1997-2000,2003,2006,2014-2016,2020 Ian
+Jackson, Copyright 2014 Mark Wooding, Copyright 1999-2000,2003,2006
+Tony Finch, and Copyright 1991 Massachusetts Institute of Technology.