ipb04a1c30.ipv4.lon01.ds.network has no CNAME records.
Question and response
Question
dig ipb04a1c30.ipv4.lon01.ds.network. NS
Answer
The response has no answer records.
Authority
ipv4.lon01.ds.network. 187 SOA names1.ds.network. dns.ds.network. 2023031401 7200 120 1209600 3600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0