ns2.mymagicmustache.com has no AAAA records.
Question and response
Question
dig ns2.mymagicmustache.com. AAAA
Answer
ns2.mymagicmustache.com. 5 CNAME mymagicmustache.com.
Authority
mymagicmustache.com. 852 SOA ns-1817.awsdns-35.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0