Registro IPv4
host: czech-open.com
class: IN
ttl: 300
type: A
ip: 104.21.37.167

Registro IPv4
host: czech-open.com
class: IN
ttl: 300
type: A
ip: 172.67.210.151

Servidores DNS Principal (mname) y Secundario (rname)
host: czech-open.com
class: IN
ttl: 1800
type: SOA
mname: abdullah.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2360107199
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Registro IPv6
host: czech-open.com
class: IN
ttl: 300
type: AAAA
ipv6: 2606:4700:3031::6815:25a7

Registro IPv6
host: czech-open.com
class: IN
ttl: 300
type: AAAA
ipv6: 2606:4700:3035::ac43:d297