mail.servidoraweb.net has no NS records.
NS records for this zone are defined at servidoraweb.net.
NS records for this zone are defined at servidoraweb.net.
Question and response
Question
dig mail.servidoraweb.net. NS
Answer
The response has no answer records.
Authority
servidoraweb.net. 86400 SOA dns1.servidoraweb.net. servers.servidoraweb.com. 2026020401 86400 7200 3600000 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0