dd8.kasserver.com has no CNAME records.
Question and response
Question
dig dd8.kasserver.com. NS
Answer
The response has no answer records.
Authority
kasserver.com. 5160 SOA ns5.kasserver.com. hostmaster.kasserver.com. 2602232120 28800 7200 1209600 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0