cornelius.london.02.net has no NS records.
NS records for this zone are defined at london.02.net.
NS records for this zone are defined at london.02.net.
Question and response
Question
dig cornelius.london.02.net. NS
Answer
The response has no answer records.
Authority
london.02.net. 3600 SOA n1.02.net. hostmaster.02.net. 2025111301 10800 3600 604800 3600
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0