Registro IPv4
host: sma.so
class: IN
ttl: 300
type: A
ip: 45.136.12.31

Servidores DNS Principal (mname) y Secundario (rname)
host: sma.so
class: IN
ttl: 300
type: SOA
mname: ns1.dyna-ns.net
rname: hostmaster.sma.so
serial: 1712740787
refresh: 16384
retry: 2048
expire: 1048576
minimum-ttl: 2560