ns4.ebusinessbe.com has no CNAME records.
Question and response
Question
dig ns4.ebusinessbe.com. NS
Answer
The response has no answer records.
Authority
ebusinessbe.com. 600 SOA ns1.ebusiness.be. dns.ebusiness.be. 2019100201 10800 3600 604801 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0