NIC.GDN has no TXT records.
Question and response
Question
dig NIC.GDN. TXT
Answer
The response has no answer records.
Authority
NIC.GDN. 900 SOA ns1.NIC.GDN. postmaster.NIC.GDN. 1501498516 21600 1800 2419200 900
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0