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

Non-authoritative answer:
staging.doku.com	canonical name = alb-54dcgg8twmh3c8vrtk.ap-southeast-5.alb.aliyuncs.com.
Name:	alb-54dcgg8twmh3c8vrtk.ap-southeast-5.alb.aliyuncs.com
Address: 149.129.246.186
Name:	alb-54dcgg8twmh3c8vrtk.ap-southeast-5.alb.aliyuncs.com
Address: 147.139.176.73