If you're publishing a domain name that is supposed to be an example or test domain, there are some reserved TLDs for that! And you never have to register or m

If you're publishing a domain name that is supposed to be an example or test domain, there are some reserved TLDs for that! And you never have to register or maintain them! https://tools.ietf.org/id/draft-ellermann-idnabis-test-tlds-00.xml#rfc.section.2 https://tools.ietf.org/id/draft-ellermann-idnabis-test-tlds-... domain.example is encouraged for documentation, but you can also use something like example.invalid. Whenever I review unit tests that have URLs in them, I insist that they use the .invalid TLD. I know that .test is encouraged, but I find that .invalid stands out more when you're browsing a test suite. The old argument against this was that the average person is really only familiar with .com, .org, and maybe .net, and they wouldn't even recognize something with a less commonly used TLD as a domain name. But with the rise in popularity of alternate TLDs, I don't think that argument is as persuasive anymore.