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

Non-authoritative answer:
cdnv.ruguoapp.com	canonical name = ga-bp1cmlnw8yop27qe1ezw0.aliyunga0017.com.
Name:	ga-bp1cmlnw8yop27qe1ezw0.aliyunga0017.com
Address: 47.251.94.188
Name:	ga-bp1cmlnw8yop27qe1ezw0.aliyunga0017.com
Address: 47.251.97.10