critical-python.sys.rootnet.io has no CNAME records.
Question and response
Question
dig critical-python.sys.rootnet.io. NS
Answer
The response has no answer records.
Authority
rootnet.io. 135 SOA nsauth.myrootnet.com. root.rootnet.nl. 2026030502 14400 3600 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0