rinkdinkybuilders.com has no CNAME records.
Question and response
Question
dig rinkdinkybuilders.com. NS
Answer
The response has no answer records.
Authority
rinkdinkybuilders.com. 5 SOA dns.rinkdinkybuilders.com. hostmaster.rinkdinkybuilders.com. 1996908348 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0