shell:$ nslookup -timeout=2 -retry=1 'www.1und1.de'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	www.1und1.de
Address: 217.160.72.6
Name:	www.1und1.de
Address: 2001:8d8:5ff:7::1:3