ns5.afoyi.com has no CNAME records.
Question and response
Question
dig ns5.afoyi.com. NS
Answer
The response has no answer records.
Authority
afoyi.com. 3600 SOA ns1.afoyi.com. root.afoyi.com. 1772719249 10800 900 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0