Registro IPv4
host: 4systems.ru
class: IN
ttl: 300
type: A
ip: 104.21.19.236

Registro IPv4
host: 4systems.ru
class: IN
ttl: 300
type: A
ip: 172.67.190.121

Servidores DNS Principal (mname) y Secundario (rname)
host: 4systems.ru
class: IN
ttl: 1800
type: SOA
mname: buck.ns.cloudflare.com
rname: dns.cloudflare.com
serial: 2392476114
refresh: 10000
retry: 2400
expire: 604800
minimum-ttl: 1800

Registro IPv6
host: 4systems.ru
class: IN
ttl: 300
type: AAAA
ipv6: 2606:4700:3037::6815:13ec

Registro IPv6
host: 4systems.ru
class: IN
ttl: 300
type: AAAA
ipv6: 2606:4700:3035::ac43:be79