Question and response
Question
dig auth.msk.ru.itoolabs.net. NS
Answer
auth.msk.ru.itoolabs.net. 5 CNAME crm.msk.ru.itoolabs.net.
Authority
msk.ru.itoolabs.net. 352 SOA dns1.itoolabs.net. noc.itoolabs.net. 2026020501 28800 7200 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0