ns.eatserver.nl has no CNAME records.
Question and response
Question
dig ns.eatserver.nl. NS
Answer
The response has no answer records.
Authority
eatserver.nl. 4708 SOA ns.eatserver.nl. root.eatserver.nl. 2026021901 28800 7200 1209600 432000
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0