ns2.superdnsserver.net has no TXT records.
Question and response
Question
dig ns2.superdnsserver.net. TXT
Answer
The response has no answer records.
Authority
superdnsserver.net. 900 SOA ns1.superdnsserver.net. hostmaster.superhosting.bg. 2013076263 3600 600 2419200 900
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0