DNS lookup is the process of querying the Domain Name System (DNS)
to obtain the IP address associated with a domain name or other DNS
record information. This process allows users and applications to
find the IP address needed to connect to a web server, mail server,
or any other internet service associated with a domain.
There are several methods to perform a DNS lookup, including using
command-line tools, online services, and programming libraries.
Using Command-Line Tools