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 = openapi.r53.airtel.africa.
Name:	openapi.r53.airtel.africa
Address: 196.46.122.48