ns.ezisp.org has no CNAME records.
Question and response
Question
dig ns.ezisp.org. NS
Answer
The response has no answer records.
Authority
ezisp.org. 7200 SOA ns1.ezisp.eu. n.kuhnen.t-en.nl. 2026022601 10800 3600 1814400 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0