I have clients that have had a domain so long they don’t remember where they purchased it. Your website is one thing, but knowing about your domain’s settings is another. None of us are getting any younger either and there’s so many things to keep track of nowadays!
Whenever you need to look up information about a domain, this is the place to go! https://www.whois.com – here you can find out where you purchased your domain as well as what nameservers the domain is pointing over to, and if it’s a public domain, you can find out the contact information that’s in the WHO.IS registry.
This information needs to be current. And you can update that information by logging into your domain host directly.