mx2.nuro.jp has no TXT records.
Question and response
Question
dig mx2.nuro.jp. TXT
Answer
The response has no answer records.
Authority
nuro.jp. 600 SOA mv-dnsm.nuro.jp. hostmaster.nuro.jp. 1771984601 3600 300 60200 600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0