em8162.dbk.dk has no NS records.
NS records for this zone are defined at dbk.dk.
NS records for this zone are defined at dbk.dk.
Question and response
Question
dig u21117928.wl179.sendgrid.net. NS
Answer
The response has no answer records.
Authority
wl179.sendgrid.net. 1800 SOA aisha.ns.cloudflare.com. dns.cloudflare.com. 2398055548 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0