uls.nrw.net has no NS records.
NS records for this zone are defined at nrw.net.
NS records for this zone are defined at nrw.net.
Question and response
Question
dig nt4a.csl-gmbh.net. NS
Answer
The response has no answer records.
Authority
csl-gmbh.net. 300 SOA a.ns.nrw.net. hostmaster.joker.com. 2026030652 14400 3600 1209600 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0