ns3.nubedns.com has no NS records.
NS records for this zone are defined at nubedns.com.
NS records for this zone are defined at nubedns.com.
Question and response
Question
dig ns3.nubedns.com. NS
Answer
The response has no answer records.
Authority
nubedns.com. 86400 SOA ns1.nubedns.com. sistemas.vadavo.com. 2025101001 3600 7200 1209600 86400
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0