shell:$ nslookup -timeout=2 -retry=1 'upload.iflix.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
upload.iflix.com	canonical name = ins-vhu6xe8n.ias.tencent-cloud.net.
Name:	ins-vhu6xe8n.ias.tencent-cloud.net
Address: 43.156.222.16
Name:	ins-vhu6xe8n.ias.tencent-cloud.net
Address: 43.156.222.203