shell:$ nslookup -timeout=2 -retry=1 'docs.dappportal.io'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
docs.dappportal.io	canonical name = 0b969fb53b-hosting.gitbook.io.
Name:	0b969fb53b-hosting.gitbook.io
Address: 104.18.40.47
Name:	0b969fb53b-hosting.gitbook.io
Address: 172.64.147.209
Name:	0b969fb53b-hosting.gitbook.io
Address: 2606:4700:4407::6812:282f
Name:	0b969fb53b-hosting.gitbook.io
Address: 2606:4700:4402::ac40:93d1