ns2.seppia.net has no CNAME records.
Question and response
Question
dig ns2.seppia.net. NS
Answer
The response has no answer records.
Authority
seppia.net. 60 SOA ns1.seppia.net. dnsadmin.seppia.net. 1312502660 120 60 604800 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0