ns2.contractpacking.org has no AAAA records.
Question and response
Question
dig ns2.contractpacking.org. AAAA
Answer
ns2.contractpacking.org. 5 CNAME contractpacking.org.
Authority
contractpacking.org. 602 SOA ns-1444.awsdns-52.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0