shell:$ nslookup -timeout=2 -retry=1 'e2e1-publish.o2business.de'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
e2e1-publish.o2business.de	canonical name = e2e1-publish.o2business.de.cdn.cloudflare.net.
Name:	e2e1-publish.o2business.de.cdn.cloudflare.net
Address: 141.101.90.96
Name:	e2e1-publish.o2business.de.cdn.cloudflare.net
Address: 141.101.90.97
Name:	e2e1-publish.o2business.de.cdn.cloudflare.net
Address: 141.101.90.99
Name:	e2e1-publish.o2business.de.cdn.cloudflare.net
Address: 141.101.90.98