ns2.domain.com has no TXT records.
Question and response
Question
dig ns2.domain.com. TXT
Answer
The response has no answer records.
Authority
domain.com. 1800 SOA lee.ns.cloudflare.com. dns.cloudflare.com. 2398137559 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0