onlyfordemo.net has no TXT records.
Question and response
Question
dig demoserver.supersite.myorderbox.com. TXT
Answer
The response has no answer records.
Authority
myorderbox.com. 1800 SOA andy.ns.cloudflare.com. dns.cloudflare.com. 2398607158 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0