shell:$ nslookup -timeout=2 -retry=1 'mazu.3g.qq.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
mazu.3g.qq.com	canonical name = ins-8bzcv1fb.ias.tencent-cloud.net.
Name:	ins-8bzcv1fb.ias.tencent-cloud.net
Address: 14.18.202.195
Name:	ins-8bzcv1fb.ias.tencent-cloud.net
Address: 14.18.202.245
Name:	ins-8bzcv1fb.ias.tencent-cloud.net
Address: 14.18.202.184
Name:	ins-8bzcv1fb.ias.tencent-cloud.net
Address: 14.18.202.208