Question and response
Question
dig _acme-challenge.netone.ru. NS
Answer
_acme-challenge.netone.ru. 5 CNAME acme-challenge.netone.ru.
Authority
netone.ru. 3600 SOA ns1.netone.ru. tech.netone.ru. 2020111871 10800 3600 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0