sunnet.net.ru has no TXT records.
Question and response
Question
dig sunnet.net.ru. TXT
Answer
The response has no answer records.
Authority
sunnet.net.ru. 3600 SOA ns.majordomo.ru. support.majordomo.ru. 2004032900 3600 900 3600000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0