blotto.klfree.net has no NS records.
NS records for this zone are defined at klfree.net.
NS records for this zone are defined at klfree.net.
Question and response
Question
dig blotto.klfree.net. NS
Answer
The response has no answer records.
Authority
klfree.net. 14400 SOA ns1.klfree.cz. root.klfree.net. 1773170387 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0