A host record in DNS is a type of DNS record that maps a domain name or subdomain to a specific resource, such as an IP address or another domain name. Host records are used to direct traffic to the appropriate server or service associated with a domain.
There are different types of host records, including A records (which map a domain to an IPv4 address), AAAA records (for IPv6 addresses), CNAME records (for aliasing one domain to another), and more, each serving specific purposes within the DNS system.