shell:$ nslookup -timeout=2 -retry=1 'imgs-ac.alipay.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
imgs-ac.alipay.com	canonical name = sg.rr2.internet-intl.spanner.alipaydns.com.
Name:	sg.rr2.internet-intl.spanner.alipaydns.com
Address: 47.235.24.195
Name:	sg.rr2.internet-intl.spanner.alipaydns.com
Address: 47.235.21.45
Name:	sg.rr2.internet-intl.spanner.alipaydns.com
Address: 47.235.24.194
Name:	sg.rr2.internet-intl.spanner.alipaydns.com
Address: 47.235.21.35