vps.bgocloud.com has no NS records.
NS records for this zone are defined at bgocloud.com.
NS records for this zone are defined at bgocloud.com.
Question and response
Question
dig vps.bgocloud.com. NS
Answer
The response has no answer records.
Authority
bgocloud.com. 1800 SOA guss.ns.cloudflare.com. dns.cloudflare.com. 2398684627 10000 2400 604800 1800
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0