example is a word without which explanations have no meaning. And, if you want to know who owns example.com then the who.is will show you these details:
domain: EXAMPLE.COM organisation: Internet Assigned Numbers Authority created: 1992-01-01 source: IANA
example.com is a reserved domain name. This domain is established to be used for illustrative examples in documents. You may use this domain in examples without prior coordination or asking for permission.
It’s almost reserved in all sorts of top level domain extensions. But, I have found domains related to puerto Rico such as these extensions – showing example as a domain available
I think example as a domain should not be allowed to be used in any sort of top level domain