rs7139.alegeus.com has no NS records.
NS records for this zone are defined at alegeus.com.
NS records for this zone are defined at alegeus.com.
Question and response
Question
dig rs7139.alegeus.com. NS
Answer
The response has no answer records.
Authority
alegeus.com. 1800 SOA coby.ns.cloudflare.com. dns.cloudflare.com. 2398927412 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0