Forward DNS Lookup:
Takes a domain name, like example.com, and returns an IP address, such as 192.0.34.166.
Reverse DNS Lookup:
Takes an IP address, like 192.0.34.166, and returns a domain name, such as example.com.
MX Record Lookup:
Takes a domain name, and returns the IP address responsible for that domain's email.
Server Software Lookup:
Takes a domain name or IP address, and returns a server software type, such as Apache.
DNS Record Lookup:
Takes a domain name, and returns all the DNS records associated with it.
IP Country Lookup:
Takes an IP address, and returns the country location of the IP address.
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