Registro IPv4
host: irsmt.ir
class: IN
ttl: 120
type: A
ip: 31.25.90.163

Servidores DNS Principal (mname) y Secundario (rname)
host: irsmt.ir
class: IN
ttl: 300
type: SOA
mname: g.ns.arvancdn.ir
rname: hostmaster.arvancloud.ir
serial: 1777234273
refresh: 86400
retry: 7200
expire: 604800
minimum-ttl: 7200