ns.domrobot.net has no CNAME records.
Question and response
Question
dig ns.domrobot.net. NS
Answer
The response has no answer records.
Authority
domrobot.net. 1987 SOA ns.domrobot.com. hostmaster.inwx.de. 2026012010 10800 3600 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0