sv02.bionic.org has no CNAME records.
Question and response
Question
dig sv02.bionic.org. NS
Answer
The response has no answer records.
Authority
bionic.org. 5976 SOA bionic.org. root.securenetwork.de. 2016022239 10800 3600 604800 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0