shell:$ nslookup -timeout=2 -retry=1 'openapi.airtel.africa'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
openapi.airtel.africa	canonical name = oksu68f.impervadns.net.
Name:	oksu68f.impervadns.net
Address: 45.60.63.37