webmail.x-shops.com has no NS records.
NS records for this zone are defined at x-shops.com.
NS records for this zone are defined at x-shops.com.
Question and response
Question
dig webmail.x-shops.com. NS
Answer
The response has no answer records.
Authority
x-shops.com. 1800 SOA kami.ns.cloudflare.com. dns.cloudflare.com. 2398373571 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0