Registro DMARC
v=DMARC1; p=none; rua=mailto:mailauth-reports@google.com

Registro IPv4
host: families.google
class: IN
ttl: 300
type: A
ip: 216.239.32.29

Servidores DNS Principal (mname) y Secundario (rname)
host: families.google
class: IN
ttl: 3600
type: SOA
mname: ns1.googledomains.com
rname: dns-admin.google.com
serial: 2014080601
refresh: 21600
retry: 3600
expire: 1209600
minimum-ttl: 300

Información TXT
host: families.google
class: IN
ttl: 300
type: TXT
txt: v=spf1 ?all
entries: Array