shell:$ nslookup -timeout=2 -retry=1 'www.hotspot.vodafone.de'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
www.hotspot.vodafone.de	canonical name = hotspot.vodafone.de.
hotspot.vodafone.de	canonical name = v58hvzh.impervadns.net.
Name:	v58hvzh.impervadns.net
Address: 45.60.74.62