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

Non-authoritative answer:
help.campaignmonitor.com	canonical name = help.campaignmonitor.com.00d5e0000011zlweau.live.siteforce.com.
help.campaignmonitor.com.00d5e0000011zlweau.live.siteforce.com	canonical name = h.edge2.salesforce.com.
h.edge2.salesforce.com	canonical name = st1.edge.sfdc-8tgtt5.edge2.salesforce.com.
Name:	st1.edge.sfdc-8tgtt5.edge2.salesforce.com
Address: 3.146.43.227
Name:	st1.edge.sfdc-8tgtt5.edge2.salesforce.com
Address: 3.146.43.229
Name:	st1.edge.sfdc-8tgtt5.edge2.salesforce.com
Address: 3.146.43.228