Couldn't retrieve https://3isk4u.cf/, and the only explanation I have is:

500 Can't connect to 3isk4u.cf:443 Content-Type: text/plain Client-Date: Sat, 25 Jun 2022 04:21:54 GMT Client-Warning: Internal response Can't connect to 3isk4u.cf:443 LWP::Protocol::https::Socket: SSL connect attempt failed with unknown error error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version at /usr/local/lib/perl5/site_perl/5.8.8/LWP/Protocol/http.pm line 49.