ns1.NIC.GDN has no CNAME records.
Question and response
Question
dig ns1.NIC.GDN. NS
Answer
The response has no answer records.
Authority
NIC.GDN. 306 SOA NS1.NIC.GDN. postmaster.NIC.GDN. 1501498516 21600 1800 2419200 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0