ns1.freepro.com has no CNAME records.
Question and response
Question
dig ns1.freepro.com. NS
Answer
The response has no answer records.
Authority
freepro.com. 10800 SOA ns1.as30781.net. hostmaster.as30781.net. 2026022601 21600 3600 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0