ns2.yandexcloud.net has no TXT records.
Question and response
Question
dig ns2.yandexcloud.net. TXT
Answer
The response has no answer records.
Authority
yandexcloud.net. 300 SOA ns3.yandex.ru. sysadmin.yandex.ru. 2048755635 900 600 3600000 300
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0