bbackup.btirol.at has no NS records.
NS records for this zone are defined at btirol.at.
NS records for this zone are defined at btirol.at.
Question and response
Question
dig bbackup.btirol.at. NS
Answer
The response has no answer records.
Authority
btirol.at. 1800 SOA barbara.ns.cloudflare.com. dns.cloudflare.com. 2396502424 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0