SOA
Start of Authority
Primary NS
Mailbox
hostmaster.1und1.com
Serial
2017060173
Refresh
28800
Retry
7200
Expire
604800
Minimum TTL
600
TXT
TXT Records
protonmail-verification=6d99e431d08d55746afdafe1f8aafc386e4e713b
v=spf1 include:_spf.protonmail.ch ~all
A