d2.pasty.net has no CNAME records.
Question and response
Question
dig d2.pasty.net. NS
Answer
The response has no answer records.
Authority
pasty.net. 3600 SOA ns1.pasty.net. hostmaster.pasty.net. 2025121401 3600 600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0