ns5.kasserver.com has no CNAME records.
Question and response
Question
dig ns5.kasserver.com. NS
Answer
The response has no answer records.
Authority
kasserver.com. 5910 SOA ns5.kasserver.com. hostmaster.kasserver.com. 2602250420 28800 7200 1209600 7200
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0