bibit.kooper.se has no NS records.
NS records for this zone are defined at kooper.se.
NS records for this zone are defined at kooper.se.
Question and response
Question
dig bibit.phetto.com. NS
Answer
The response has no answer records.
Authority
com. 900 SOA a.gtld-servers.net. nstld.verisign-grs.com. 1772571976 1800 900 604800 900
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0