inmxmss02.belgacom.be has no NS records.
NS records for this zone are defined at belgacom.be.
NS records for this zone are defined at belgacom.be.
Question and response
Question
dig inmxmss02.belgacom.be. NS
Answer
The response has no answer records.
Authority
belgacom.be. 3600 SOA ns1.skynet.be. dnsmaster.skynet.be. 1035050 3600 1800 3600000 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0