blue.foundationdns.com has no TXT records.
Question and response
Question
dig blue.foundationdns.com. TXT
Answer
The response has no answer records.
Authority
foundationdns.com. 1800 SOA blue.foundationdns.com. dns.cloudflare.com. 2398046222 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0