shell:$ nslookup -timeout=2 -retry=1 'sd.zain.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	sd.zain.com
Address: 166.117.68.14
Name:	sd.zain.com
Address: 166.117.214.16
;; communications error to 75.98.161.224#53: timed out