Free DNS tools, IP, domain and network tools
Abuse contact lookup
Common service ports
Open SMTP relay check
Web host info
Hex to decimal IP
IP to long
Long to IP
Perform a reverse DNS lookup on an IP address, returning the associated PTR record. RDNS is the acronym for a Reverse DNS Lookup.
A Reverse DNS Lookup (RDNS) is the process of resolving an IP address to a domain name. An RDNS is the opposit of a
where the IP address is found for a domain name.