In fact the Register for the domain is Domainsbyproxy, that crap that was being used during the last election to hide sites harvesting data....

The registrar for the domain is likely GoDaddy.

There is absolutely nothing special about Domains by Proxy.

If you place your domain with eg Cloudflare, they'll conceal your registration information. Dozens of other prominent registrars will do the same thing for either free and inexpensively.