ns4.portformance.com has no NS records.
NS records for this zone are defined at portformance.com.
NS records for this zone are defined at portformance.com.
Question and response
Question
dig ns4.portformance.com. NS
Answer
The response has no answer records.
Authority
portformance.com. 300 SOA ns1.nodesecure.com. hostmaster.portformance.de. 2026033832 43200 7200 1209600 300
Additional
. 0 OPT ; payload 1400, xrcode 0, version 0, flags 0