Загрузка данных

dscacheutil -q host -a name jss.corp.mail.ru

dig @172.21.0.1 jss.corp.mail.ru A +time=2 +tries=1 +noall +comments +answer

curl -4 --connect-timeout 5 --max-time 20 -sS -o /dev/null -w 'DNS=%{time_namelookup}s TCP=%{time_connect}s TLS=%{time_appconnect}s HTTP=%{http_code}\n' https://jss.corp.mail.ru:8443/