Reverse DNS Lookup:
Reverse DNS lookup involves a straightforward query against the DNS system to map an IP address to its corresponding domain name. This is accomplished by examining the DNS PTR records set by the IP address owner. The process helps verify the authenticity of connections and identify the hostname associated with an IP address, commonly used for network administration and security purposes, particularly in email authentication.
Reverse IP Lookup:
Reverse IP lookup taps into a complex database that records IP addresses associated with crawled websites, providing a list of websites hosted at a specific IP address. This method allows users to uncover domain names hosted on a given IP address, aiding investigations into shared hosting environments and hosting histories.