SOA
Start of Authority
Primary NS
Mailbox
hostmaster.1und1.com
Serial
2017060126
Refresh
28800
Retry
7200
Expire
604800
Minimum TTL
600
NS
Nameservers
MX
Mail Exchangers
TXT
TXT Records
protonmail-verification=c2bce71f7b4d43e7b7dde497e8d413ad6944e99c
v=spf1 include:_spf.protonmail.ch mx ~all
AAAA