a.ns.ao has no CNAME records.
Question and response
Question
dig a.ns.ao. NS
Answer
The response has no answer records.
Authority
ns.ao. 3600 SOA dns51.cloudns.net. support.cloudns.net. 2024062606 7200 1800 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0