The BIND package contains dig, host, isc-config.sh, nslookup, rndc, rndc-confgen, named-checkconf, named-checkzone, lwresd, named, dnssec-signzone, dnssec-signkey, dnssec-keygen, dnssec-makekeyset and nsupdate. dig interrogates DNS servers. host is a utility for DNS lookups. nslookup is a program used to query Internet domain nameservers. rndc controls the operation of BIND. rndc-confgen generates rndc.conf files. named-checkconf checks the syntax of named.conf files. named-checkzone checks zone file validity. lwresd is a caching-only name server for local process use. named is the name server daemon. dnssec-signzone generates signed versions of zone files. dnssec-signkey signs zone file key sets. dnssec-keygen is a key generator for secure DNS. dnssec-makekeyset generates a key set from one or more keys created by dnssec-keygen. nsupdate is used to submit DNS update requests.