mail01.bredband2.org has no NS records.
NS records for this zone are defined at bredband2.org.
NS records for this zone are defined at bredband2.org.
Question and response
Question
dig mail01.bredband2.org. NS
Answer
The response has no answer records.
Authority
bredband2.org. 600 SOA pdns01.port53.se. postmaster.port53.se. 2015111108 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0