For the record, example.com, example.net and example.org are reserved domains, that cannot be used. So you can always use those as safe examples. https://en.wikipedia.org/wiki/Example.com https://tools.ietf.org/html/rfc2606
For the record, example.com, example.net and example.org are reserved domains, that cannot be used. So you can always use those as safe examples. https://en.wikipedia.org/wiki/Example.com https://tools.ietf.org/html/rfc2606