mu2.mx.giantsofthecloud.net has no NS records.
NS records for this zone are defined at giantsofthecloud.net.
NS records for this zone are defined at giantsofthecloud.net.
Question and response
Question
dig mu2.mx.giantsofthecloud.net. NS
Answer
The response has no answer records.
Authority
giantsofthecloud.net. 3601 SOA dns1.registrar-servers.com. hostmaster.registrar-servers.com. 1772115153 43200 3600 604800 3601
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0