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

Non-authoritative answer:
tencheck.tencent.com	canonical name = ins-ie2zo4qr.ias.tencent-cloud.net.
Name:	ins-ie2zo4qr.ias.tencent-cloud.net
Address: 43.155.124.23
Name:	ins-ie2zo4qr.ias.tencent-cloud.net
Address: 43.154.240.111
Name:	ins-ie2zo4qr.ias.tencent-cloud.net
Address: 43.135.105.98