ns02.hosting-srv.net has no NS records.
NS records for this zone are defined at hosting-srv.net.
NS records for this zone are defined at hosting-srv.net.
Question and response
Question
dig ns02.hosting-srv.net. NS
Answer
The response has no answer records.
Authority
hosting-srv.net. 3600 SOA ns01.hosting-srv.net. root.osscore.hosting-srv.net. 575722 14400 7200 2419200 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0