Registro IPv4
host: netguru.cz
class: IN
ttl: 1800
type: A
ip: 81.2.196.170

Servidores DNS Principal (mname) y Secundario (rname)
host: netguru.cz
class: IN
ttl: 1800
type: SOA
mname: ns.forpsi.net
rname: admin.forpsi.com
serial: 2025112901
refresh: 14400
retry: 3600
expire: 2592000
minimum-ttl: 3600