mail.autooil.com.ua has no NS records.
NS records for this zone are defined at autooil.com.ua.
NS records for this zone are defined at autooil.com.ua.
Question and response
Question
dig mail.autooil.com.ua. NS
Answer
The response has no answer records.
Authority
autooil.com.ua. 1800 SOA gracie.ns.cloudflare.com. dns.cloudflare.com. 2397667031 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0