antispam.dmg.tv has no CNAME records.
Question and response
Question
dig antispam.dmg.tv. NS
Answer
The response has no answer records.
Authority
dmg.tv. 1800 SOA pete.ns.cloudflare.com. dns.cloudflare.com. 2397580999 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0