blackinfonet.com has no CNAME records.
Question and response
Question
dig blackinfonet.com. NS
Answer
The response has no answer records.
Authority
blackinfonet.com. 2 SOA ns1.blackinfonet.com. postmaster.blackinfonet.com. 2025081214 28800 7200 1209600 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0