pollux.frontedge.net has no CNAME records.
Question and response
Question
dig pollux.frontedge.net. NS
Answer
The response has no answer records.
Authority
frontedge.net. 1792 SOA castor.frontedge.net. postmaster.frontedge.net. 2025021167 7200 900 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0