SOA
Start of Authority
Primary NS
Mailbox
hostmaster.1und1.com
Serial
2017060113
Refresh
28800
Retry
7200
Expire
604800
Minimum TTL
600
TXT
TXT Records
protonmail-verification=c8283405bd8018676f63bd9972ee4939ce46e675
v=spf1 include:_spf.protonmail.ch ~all
AAAA