shell:$ nslookup -timeout=2 -retry=1 'ws.rqtrk.eu'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	ws.rqtrk.eu
Address: 51.222.241.106
Name:	ws.rqtrk.eu
Address: 51.222.241.145
Name:	ws.rqtrk.eu
Address: 51.222.241.100