Registro IPv4
host: gbtourco.com
class: IN
ttl: 600
type: A
ip: 54.72.252.80

Servidores DNS Principal (mname) y Secundario (rname)
host: gbtourco.com
class: IN
ttl: 3600
type: SOA
mname: ns67.domaincontrol.com
rname: dns.jomax.net
serial: 2019062400
refresh: 28800
retry: 7200
expire: 604800
minimum-ttl: 600