beg.checkmyknowledge.org has no CNAME records.
Question and response
Question
dig beg.checkmyknowledge.org. NS
Answer
The response has no answer records.
Authority
checkmyknowledge.org. 3279 SOA ns-727.awsdns-26.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0