ns.s2p.de has no NS records.
NS records for this zone are defined at s2p.de.
NS records for this zone are defined at s2p.de.
Question and response
Question
dig ns.s2p.de. NS
Answer
The response has no answer records.
Authority
s2p.de. 1800 SOA adenin.s2p.de. hostmaster.s2p.de. 1914 86400 7200 2419200 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0