proof.rain.fr has no NS records.
NS records for this zone are defined at rain.fr.
NS records for this zone are defined at rain.fr.
Question and response
Question
dig proof.rain.fr. NS
Answer
The response has no answer records.
Authority
rain.fr. 3600 SOA dns1.equant.net. root.rain.fr. 2026010912 3600 600 2592000 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0