shell:$ nslookup -timeout=2 -retry=1 'ns-249.awsdns-31.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	ns-249.awsdns-31.com
Address: 205.251.192.249
Name:	ns-249.awsdns-31.com
Address: 2600:9000:5300:f900::1