Registro IPv4
host: smartviz.ru
class: IN
ttl: 300
type: A
ip: 212.57.116.30

Servidores DNS Principal (mname) y Secundario (rname)
host: smartviz.ru
class: IN
ttl: 1800
type: SOA
mname: abdullah.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2399980803
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800