antispam0.winteraccess.net has no CNAME records.
Question and response
Question
dig antispam0.winteraccess.net. NS
Answer
The response has no answer records.
Authority
winteraccess.net. 499 SOA dale.ns.cloudflare.com. dns.cloudflare.com. 2396693755 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0