dns (dig, named)

# Dig краткий ответ:
dig +noall +answer

watch "for i in ns{2,3,7,8}.rian.off 8.8.8.8 8.8.4.4 resolver1.opendns.com resolver2.opendns.com 77.88.8.8 77.88.8.1 ns{4,8}-l2.nic.ru ns{4,8}-cloud.nic.ru; do echo \${i};dig +short soa sputniknews.com @\${i};echo;done"

# List of public DNSs:
https://www.lifewire.com/free-and-public-dns-servers-2626062
https://wiki.ipfire.org/dns/public-servers