contact.dotblock.com has no CNAME records.
Question and response
Question
dig contact.dotblock.com. NS
Answer
The response has no answer records.
Authority
dotblock.com. 1696 SOA elinore.ns.cloudflare.com. dns.cloudflare.com. 2396667077 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0