The user space command line tools from the latest version of BIND: delv, dig, host, nslookup, nsupdate It also includes various dnssec related tools: dnssec-dsfromkey, dnssec-importkey, dnssec-keyfromlabel, dnssec-keygen, dnssec-revoke, dnssec-settime, dnssec-signzone, dnssec-verify WWW: https://www.isc.org/downloads/bind/