plesk01.websiteserver.uk has no NS records.
NS records for this zone are defined at websiteserver.uk.
NS records for this zone are defined at websiteserver.uk.
Question and response
Question
dig plesk01.websiteserver.uk. NS
Answer
The response has no answer records.
Authority
websiteserver.uk. 3600 SOA dns01.edge.fyfeweb.uk.net. support.fyfeweb.com. 1630240718 3600 600 3600 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0