shell:$ nslookup -timeout=2 -retry=1 'ec2-122-ct-aws-1.commonwork.net'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
ec2-122-ct-aws-1.commonwork.net	canonical name = QWS-VPC-LB1-1961737312.ap-southeast-1.elb.amazonaws.com.
Name:	QWS-VPC-LB1-1961737312.ap-southeast-1.elb.amazonaws.com
Address: 52.221.7.39
Name:	QWS-VPC-LB1-1961737312.ap-southeast-1.elb.amazonaws.com
Address: 54.251.250.235