mdnsservice.com has no TXT records.
Question and response
Question
dig mdnsservice.com. TXT
Answer
The response has no answer records.
Authority
mdnsservice.com. 300 SOA ns1.tucows.com. hostmaster.mdnsservice.com. 1772668800 10800 3600 2592000 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0