To be fair, you really don't own a domain. You still rely on the TLD honoring your purchase and not hand it over to someone else in the same way you rely on the phone company to treat your number as yours.
Recent example:
https://issues.apache.org/jira/browse/INFRA-13657
Note - Don't use Dotster (specifically) for your domains. If you're using them now, switch away. Saying that because if you experience any trouble with your domains, you'll be wanting to contact competent staff who can fix problems. Dotster's can't. :(
https://www.google.com/amp/s/www.forbes.com/sites/theyec/201...
Not exactly an easy thing to do with a phone number.