puppet.ntfo.org has no CNAME records.
Question and response
Question
dig puppet.ntfo.org. NS
Answer
The response has no answer records.
Authority
ntfo.org. 3518 SOA ns1.everett.org. postmaster.ntfo.org. 2026022402 3600 14400 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0