Tool description

Find domains hosted in the past on a particular IP address. It shows a maximum of 2,500 domain names per IP address (depending on your membership type). Both IPv4 and IPv6 addresses are supported. Just type an IP address and click the Go button. If you are looking for the IP history of a single domain, you must use our Hosting History tool.

Example objectives

• Discover previous hosted domain names of a company.
• Perform research on (malicious) IP addresses.
• Discover relations between IP addresses.

FAQ

Q: When did you start recording IP history for domains?
A: We started archiving IP records in 2012. First we only archived A (IPv4) records and in 2014 we added AAAA (IPv6) records.

Q: How often do you resolve IP/DNS records for a domain?
A: Our DNS crawlers try to resolve every domain name once per month.

Q: How many domains do you have?
A: We have access to all gTLD (com, net, org etc.) and nTLD (xyz, berlin, nyc etc.) daily zone files. For ccTLD (de, fr, eu etc.) our coverage is between 50% and 80% depending on the ccTLD.

Q: How many history IP records do you have?
A: On November 2020 we had 2+ billion IP history records on file.

Q: A domain returned by the Reverse IP History tool is currently hosted on that IP. How is that possible?
A: The results of this tool are constructed by all our archived IP records. An IP record is archived when our DNS crawler no longer finds it. For example a domain is hosted on a different IP, dropped from the zone file or the DNS server is unreachable. In those cases the IP record is archived and the domain is returned by this tool. It is possible after a certain period a domain is using the original IP again.