vps.sparkhosting.org has no NS records.
NS records for this zone are defined at sparkhosting.org.
NS records for this zone are defined at sparkhosting.org.
Question and response
Question
dig vps.sparkhosting.org. NS
Answer
The response has no answer records.
Authority
sparkhosting.org. 86400 SOA ns1.sparkhosting.org. dnsadmin.sparkhosting.org. 2026021601 3600 1800 1209600 86400
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0