Registro IPv4
host: citopro.ru
class: IN
ttl: 90
type: A
ip: 176.57.64.121

Servidores DNS Principal (mname) y Secundario (rname)
host: citopro.ru
class: IN
ttl: 3600
type: SOA
mname: ns3-l2.nic.ru
rname: dns.nic.ru
serial: 2018051415
refresh: 1440
retry: 3600
expire: 2592000
minimum-ttl: 600