Registro IPv4
host: classiguru.com
class: IN
ttl: 7200
type: A
ip: 50.6.43.241

Servidores DNS Principal (mname) y Secundario (rname)
host: classiguru.com
class: IN
ttl: 21600
type: SOA
mname: hgns1.hostgator.com
rname: root.sh00053.hostgator.com
serial: 2025112900
refresh: 86400
retry: 7200
expire: 3600000
minimum-ttl: 300