brain.university.de.com has no NS records.
NS records for this zone are defined at university.de.com.
NS records for this zone are defined at university.de.com.
Question and response
Question
dig brain.university.de.com. NS
Answer
The response has no answer records.
Authority
university.de.com. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1767371641 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0