A records

netcup GmbH
92.60.36.29   1,983

AAAA records

NO RECORDS

MX records

Heinlein-Support GmbH
20 mxext3.mailbox.org15,819
10 mxext2.mailbox.org16,070
10 mxext1.mailbox.org16,224

NS records

SOA records

ttl: 28,800
email: dnsadmin@netcup.net127,186

TXT

v=spf1 mx a include:_spf.webhosting.systems ~all

CNAME records pointed here1