ns2.timestaronline.com has no AAAA records.
Question and response
Question
dig ns2.timestaronline.com. AAAA
Answer
ns2.timestaronline.com. 3 CNAME timestaronline.com.
Authority
timestaronline.com. 3565 SOA dns.timestaronline.com. hostmaster.timestaronline.com. 1837214981 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0