$ sudo apt-get install bind9
$ sudo apt-get install dnsutils
nslookup www.telekom.de
Server:         192.168.100.2
Address:        192.168.100.2#53
Non-authoritative answer:
Name:   www.telekom.de
Address: 217.150.151.99

$ sudo vi /etc/resolv.conf
domain homenet.de
search homenet.de
nameserver 127.0.0.1
nameserver 194.187.164.20
nameserver 193.158.224.9
nameserver 80.239.175.131
nameserver 80.239.207.176
nameserver 212.211.132.4
nameserver 212.43.68.10
nameserver 81.209.130.140
nameserver 213.30.253.65
nameserver 141.2.1.3

$ nslookup www.telekom.de
Server:         127.0.0.1
Address:        127.0.0.1#53
Non-authoritative answer:
Name:   www.telekom.de
Address: 217.150.151.99