SOA
Start of Authority
Primary NS
Mailbox
dns.cloudflare.com
Serial
2406305400
Refresh
10000
Retry
2400
Expire
604800
Minimum TTL
1800
TXT
TXT Records
v=spf1 include:_spf.protonmail.ch ~all
protonmail-verification=ac5820c7f934d46cc1c757bc3aebdc90160fa0be