mx1.bredband2.se has no NS records.
NS records for this zone are defined at bredband2.se.
NS records for this zone are defined at bredband2.se.
Question and response
Question
dig mx1.bredband2.se. NS
Answer
The response has no answer records.
Authority
bredband2.se. 1800 SOA lee.ns.cloudflare.com. dns.cloudflare.com. 2398111481 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0