_dmarc.rt.ntfo.org has no CNAME records.
Question and response
Question
dig _dmarc.rt.ntfo.org. NS
Answer
The response has no answer records.
Authority
ntfo.org. 3597 SOA ns1.everett.org. postmaster.ntfo.org. 2026022402 3600 14400 604800 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0