Registro IPv4
host: ipv4only.arpa
class: IN
ttl: 21477
type: A
ip: 192.0.0.171

Registro IPv4
host: ipv4only.arpa
class: IN
ttl: 21477
type: A
ip: 192.0.0.170

Servidores DNS Principal (mname) y Secundario (rname)
host: ipv4only.arpa
class: IN
ttl: 20727
type: SOA
mname: sns.dns.icann.org
rname: noc.dns.icann.org
serial: 2026091700
refresh: 7200
retry: 3600
expire: 604800
minimum-ttl: 3600