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

Non-authoritative answer:
Name:	activecampaign.com
Address: 104.20.0.15
Name:	activecampaign.com
Address: 104.20.1.15
Name:	activecampaign.com
Address: 2606:4700:10::6814:10f
Name:	activecampaign.com
Address: 2606:4700:10::6814:f