shell:$ nslookup -timeout=2 -retry=1 'cdnv2.ruguoapp.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
cdnv2.ruguoapp.com	canonical name = cdnv2.ruguoapp.com.w.cdngslb.com.
Name:	cdnv2.ruguoapp.com.w.cdngslb.com
Address: 8.25.82.226
Name:	cdnv2.ruguoapp.com.w.cdngslb.com
Address: 8.25.82.227
Name:	cdnv2.ruguoapp.com.w.cdngslb.com
Address: 8.25.82.224
Name:	cdnv2.ruguoapp.com.w.cdngslb.com
Address: 8.25.82.225
Name:	cdnv2.ruguoapp.com.w.cdngslb.com
Address: 8.25.82.230
Name:	cdnv2.ruguoapp.com.w.cdngslb.com
Address: 8.25.82.231
Name:	cdnv2.ruguoapp.com.w.cdngslb.com
Address: 8.25.82.228
Name:	cdnv2.ruguoapp.com.w.cdngslb.com
Address: 8.25.82.229