shell:$ nslookup -timeout=2 -retry=1 'sistec.co.ao'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	sistec.co.ao
Address: 172.67.139.248
Name:	sistec.co.ao
Address: 104.21.54.152
Name:	sistec.co.ao
Address: 2606:4700:3037::6815:3698
Name:	sistec.co.ao
Address: 2606:4700:3037::ac43:8bf8