ilbe.com.bplslb.com has no CNAME records.
Question and response
Question
dig ilbe.com.bplslb.com. NS
Answer
The response has no answer records.
Authority
bplslb.com. 173 SOA ns3.bytedns.com. dnsadmin.bytedance.com. 2022040618 3600 1200 86400 180
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0