Find historical connected domains to a name server (NS record).Enter name server. Example: ns1.google.com
Find domains using a name server (NS record) in the past. It shows a maximum of 2,500 previous connected domains to a name server (depending on your membership type). Just type a name server and click the Go button. If you are looking for the NS history of a single domain, you must use our Hosting History tool.
Q: How many NS history records do you have?
A: On November 2020 we had 2+ billion NS history records on file.
Q: How often do you resolve the NS records for a domain?
A: Our DNS crawlers try to resolve every domain name once per month.
Q: How many name servers do you have?
A: We have 6+ million active name servers and 40+ million inactive name servers on file.
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: Is this tool available for all Top Level Domains?
A: Yes, the Reverse NS History tool returns all domains.
Q: A domain returned by the Reverse NS History tool is currently using that name server. How is that possible?
A: The results of this tool are constructed by all our archived NS records. A NS record is archived when our DNS crawler no longer finds it. For example a domain is using a different name server, dropped from the zone file or the DNS server is unreachable. In those cases the NS record is archived and the domain is returned by this tool. It is possible after a certain period a domain is using the original name server again.
|Your public IP Address|
Information about your public IP Address like reverse dns, hosting info and whois data.
|my IP Address for Windows 8.1 & 10|
This app shows detailed information about your IP Address, your domain and your provider.