a45.a4959fe4.euw1.send.eu.mailgun.net has no NS records.
NS records for this zone are defined at a4959fe4.euw1.send.eu.mailgun.net.
NS records for this zone are defined at a4959fe4.euw1.send.eu.mailgun.net.
Question and response
Question
dig a45.a4959fe4.euw1.send.eu.mailgun.net. NS
Answer
The response has no answer records.
Authority
a4959fe4.euw1.send.eu.mailgun.net. 300 SOA ns-cloud-a1.googledomains.com. cloud-dns-hostmaster.google.com. 1 21600 3600 259200 300
Additional
. 0 OPT ; payload 512, xrcode 0, version 0, flags 0