SOA
Start of Authority
Primary NS
Mailbox
cloud-dns-hostmaster.google.com
Serial
5
Refresh
21600
Retry
3600
Expire
259200
Minimum TTL
300
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
v=spf1 include:_spf.protonmail.ch ~all
protonmail-verification=c880bd0a63bb98ba1b53d32c3fd63d33d5ee28af