The first implementation of the Domain Name System was called JEEVES, written by Paul Mockapetris himself. A later implementation was BIND, written for Berkeley's 4.3BSD UNIX operating system by Kevin Dunlap. BIND is now maintained by the Internet Software Consortium.
 For more information on the Internet Software Consortium and its work on BIND, see http://www.isc.org/bind.html.
Berkeley Internet Name Domain (BIND) is the implementation we'll concentrate on in this book. BIND is by far the most popular implementation of DNS today. It has been ported to most flavors of UNIX, and is shipped as a standard part of most vendors' UNIX offerings. BIND has even been ported to Microsoft's Windows NT.