Registro DMARC
v=spf1 ip4:88.86.113.128/27 -all

Registro IPv4
host: czechian.net
class: IN
ttl: 600
type: A
ip: 185.64.219.22

Servidores DNS Principal (mname) y Secundario (rname)
host: czechian.net
class: IN
ttl: 600
type: SOA
mname: a.ns.webzdarma.cz
rname: podpora.webzdarma.cz
serial: 2021031600
refresh: 28800
retry: 3600
expire: 3024000
minimum-ttl: 86400

Servidor de Correo
host: czechian.net
class: IN
ttl: 600
type: MX
pri: 50
target: mail-int.webzdarma.cz

Información TXT
host: czechian.net
class: IN
ttl: 600
type: TXT
txt: v=spf1 ip4:88.86.113.128/27 -all
entries: Array