ns2.afoyi.com has no CNAME records.
Question and response
Question
dig ns2.afoyi.com. NS
Answer
The response has no answer records.
Authority
afoyi.com. 1492 SOA ns1.afoyi.com. root.afoyi.com. 1772373653 10800 900 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0