mail.fotbo.host has no NS records.
NS records for this zone are defined at fotbo.host.
NS records for this zone are defined at fotbo.host.
Question and response
Question
dig mail.fotbo.host. NS
Answer
The response has no answer records.
Authority
fotbo.host. 1800 SOA gracie.ns.cloudflare.com. dns.cloudflare.com. 2399783670 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0