ns2.zoneopportunityknocks.com has no AAAA records.
Question and response
Question
dig ns2.zoneopportunityknocks.com. AAAA
Answer
ns2.zoneopportunityknocks.com. 2 CNAME zoneopportunityknocks.com.
Authority
zoneopportunityknocks.com. 2827 SOA dns.zoneopportunityknocks.com. hostmaster.zoneopportunityknocks.com. 1320376700 43200 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0