f.dns.si has no CNAME records.
Question and response
Question
dig f.dns.si. NS
Answer
The response has no answer records.
Authority
si. 3600 SOA b.dns.si. dns.register.si. 1772431217 3600 1800 720000 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0