mail.eurodns.com has no NS records.
NS records for this zone are defined at eurodns.com.
NS records for this zone are defined at eurodns.com.
Question and response
Question
dig mail.eurodns.com. NS
Answer
The response has no answer records.
Authority
eurodns.com. 86400 SOA ns-a.eurodns.com. hostmaster.eurodns.com. 2026030900 43200 7200 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0