TL;DR

It’s 404 Not Found day of the year 2020 (404 * 5), everyone stay 200 OK.

$ date -I
2020-04-04

main()


$ curl -LIs who.is/responsible/4/covid-19
...
Server: Vanish
...
HTTP/1.1 404 Not Found
...

$ curl -LIs 2020.life/family/stay?status=safe&condition=healthy
...
Server: FeelingLucky
...
HTTP/2 200 OK
...

EOF