BIND (Berkeley Internet Name Domain) is the most commonly used DNS server on the Internet, especially on Unix systems, in which it is a de facto standard. It is sponsored by the Internet Systems Consortium. BIND was originally created by four undergraduate students at the University of California, Berkeley and first released on the 4.3BSD. Paul Vixie began to maintain it in 1988 while working for the DEC.
A new version of BIND (BIND 9) was written from scratch in part to overcome the architectural difficulties previously presented to audit the code in early versions of BIND, and also to incorporate DNS Security Extensions (DNSSEC). BIND 9 includes among other important features: TSIG, DNS notification, nsupdate, IPv6, rndc flush, views, parallel processing, and improved portability architecture. It is commonly used on Linux systems.