ki2.owe.de has no NS records.
NS records for this zone are defined at owe.de.
NS records for this zone are defined at owe.de.
Question and response
Question
dig weda2.dynamdns.de. NS
Answer
The response has no answer records.
Authority
dynamdns.de. 60 SOA ns.owe.de. hostmaster.owe.de. 5128 10800 3600 604800 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0