mx01.rackhost.hu has no NS records.
NS records for this zone are defined at rackhost.hu.
NS records for this zone are defined at rackhost.hu.
Question and response
Question
dig mx01.rackhost.hu. NS
Answer
The response has no answer records.
Authority
rackhost.hu. 1800 SOA josh.ns.cloudflare.com. dns.cloudflare.com. 2396737514 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0