rDNS, or Reverse DNS, is a process that identifies the domain name associated with an IP address (IPv4 or IPv6). That is the reverse of Forward DNS, which seeks to match a domain name to its corresponding IP address. The use of PTR records is necessary for the successful completion of rDNS. Typically, rDNS is employed to verify that an IP address belongs to a particular domain name, thus helping to prevent spam and fraudulent emails. Discover additional information about rDNS!