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

Non-authoritative answer:
app.launchdarkly.com	canonical name = m.sni.global.fastly.net.
Name:	m.sni.global.fastly.net
Address: 146.75.9.55