ns2.turnkeydns.com has no CNAME records.
Question and response
Question
dig ns2.turnkeydns.com. NS
Answer
The response has no answer records.
Authority
turnkeydns.com. 1683 SOA ns1.turnkeydns.com. dns.as40244.net. 2026022600 3600 1800 1209600 10800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0