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

Non-authoritative answer:
onenumber.vodafone.com	canonical name = j6s8b9h.ng.impervadns.net.
Name:	j6s8b9h.ng.impervadns.net
Address: 45.60.73.192