Registro IPv4
host: ca.ingress.tunnel.v4guard.io
class: IN
ttl: 300
type: A
ip: 51.222.145.244

host: mc.hydracraft.es
class: IN
ttl: 300
type: CNAME
target: a36eb8e41e40812d.cust.tunnel.v4guard.io

Servidores DNS Principal (mname) y Secundario (rname)
host: ca.ingress.tunnel.v4guard.io
class: IN
ttl: 3600
type: SOA
mname: beacon.ns.v4guard.net
rname: noc.as215764.net
serial: 2157641902
refresh: 3600
retry: 300
expire: 3600000
minimum-ttl: 60