dnsalias.net has no TXT records.
Question and response
Question
dig dnsalias.net. TXT
Answer
The response has no answer records.
Authority
dnsalias.net. 600 SOA ns1.dyndns.org. hostmaster.dyndns.org. 2220104552 600 300 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0