Registro IPv4
host: btracker.xyz
class: IN
ttl: 3600
type: A
ip: 76.76.21.21

Servidores DNS Principal (mname) y Secundario (rname)
host: btracker.xyz
class: IN
ttl: 21600
type: SOA
mname: ns1.dnsowl.com
rname: hostmaster.dnsowl.com
serial: 1757262138
refresh: 7200
retry: 1800
expire: 1209600
minimum-ttl: 600