dnsutils - 1:9.11.5.P4+dfsg-5.1+deb10u7 main

The Berkeley Internet Name Domain (BIND) implements an Internet domain
name server. BIND is the most widely-used name server software on the
Internet, and is supported by the Internet Software Consortium, www.isc.org.
.
This package delivers various client programs related to DNS that are
derived from the BIND source tree.
.
- dig - query the DNS in various ways
- nslookup - the older way to do it
- nsupdate - perform dynamic updates (See RFC2136)