ns2.developcommonground.com has no AAAA records.
Question and response
Question
dig ns2.developcommonground.com. AAAA
Answer
ns2.developcommonground.com. 5 CNAME developcommonground.com.
Authority
developcommonground.com. 3563 SOA ns-76.awsdns-09.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0