"With a public registration, John Smith's personal information is available for anyone to see in the Whois listing for his domain - anywhere, anytime.
But a private registration with Domains By Proxy shields John Smith's personal information from public display -- and the private email address we create allows John to control who reaches him."
https://www.whois.com/whois/populist.press
Domains By Proxy, LLC
"https://www.domainsbyproxy.com/"
"With a public registration, John Smith's personal information is available for anyone to see in the Whois listing for his domain - anywhere, anytime.
But a private registration with Domains By Proxy shields John Smith's personal information from public display -- and the private email address we create allows John to control who reaches him."
I tried. I failed.