shell:$ nslookup -timeout=2 -retry=1 'v53-f.swiftserve.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
v53-f.swiftserve.com	canonical name = v53-f.swiftserve.com.ll-jns.swiftserve.com.
Name:	v53-f.swiftserve.com.ll-jns.swiftserve.com
Address: 104.18.49.163
Name:	v53-f.swiftserve.com.ll-jns.swiftserve.com
Address: 104.18.53.172
Name:	v53-f.swiftserve.com.ll-jns.swiftserve.com
Address: 2606:4700:3118::6812:31a3
Name:	v53-f.swiftserve.com.ll-jns.swiftserve.com
Address: 2606:4700:3110::6812:35ac