ns2.mikrotik.com has no CNAME records.
Question and response
Question
dig ns2.mikrotik.com. NS
Answer
The response has no answer records.
Authority
mikrotik.com. 3600 SOA dns-master.mikrotik.com. support.mikrotik.com. 1772833247 3600 900 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0