Registro DMARC
v=DMARC1; p=reject;

Registro IPv4
host: avonex.biz
class: IN
ttl: 300
type: A
ip: 3.227.213.37

Servidores DNS Principal (mname) y Secundario (rname)
host: avonex.biz
class: IN
ttl: 300
type: SOA
mname: ns1.gump.biogen-support.com
rname: admin.biogen-support.com
serial: 2024010101
refresh: 3600
retry: 600
expire: 604800
minimum-ttl: 300

Información TXT
host: avonex.biz
class: IN
ttl: 300
type: TXT
txt: v=spf1 -all
entries: v=spf1 -all