hmail.jitbit.com has no NS records.
NS records for this zone are defined at jitbit.com.
NS records for this zone are defined at jitbit.com.
Question and response
Question
dig hmail.jitbit.com. NS
Answer
The response has no answer records.
Authority
jitbit.com. 1800 SOA cody.ns.cloudflare.com. dns.cloudflare.com. 2396544300 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0