Find all domains owned by an entity / person
 

Is it possible, these days. I've come across something like this on the Net now. There used to be a company for it by people from SemRush.com.

It is possible to find all websites hosted on one IP, I am not sure to what extent these tools are accurate, it probably depends on the hosting type too.

Another good way to see what people to is to search for their nicknames on the Net, could be with advanced search operators. See what forums they use and so on. This can give some good info too.

Domain tools does this if you have a premium account or buy it by the report if not.

you probably need reverse whois lookup https://reversewhois.domaintools.com/
or Reverse Name Server Lookup https://reversens.domaintools.com/

you can also monitor and get alerts on a Registrant, IP and NameServer
https://research.domaintools.com/mon...erver-monitor/
https://research.domaintools.com/mon...trant-monitor/
https://research.domaintools.com/monitor/ip-monitor/

this is why I use bogus reg info on all my domains

If you're business is worth zero, bogus info is a good way forward because you can potentially lose a business worth zero. You wont cry about it, because its worth zero :1orglaugh

If you have a business worth something, use valid info but cover it over with whois privacy. Domaintools can only collect the data if it gets a peek at the domain whois details and can thereby make a snapshot.

Never had an issue in almost 20 years. I do not trust whois privacy at all.