shell:$ nslookup -timeout=2 -retry=1 'ngrok-free.app'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	ngrok-free.app
Address: 3.17.7.232
Name:	ngrok-free.app
Address: 3.134.39.220
Name:	ngrok-free.app
Address: 3.13.191.225
Name:	ngrok-free.app
Address: 3.14.182.203
Name:	ngrok-free.app
Address: 3.134.125.175
Name:	ngrok-free.app
Address: 3.22.30.40
Name:	ngrok-free.app
Address: 2406:da1c:3b5:2501:26c0:f901:ed81:6a0f
Name:	ngrok-free.app
Address: 2406:da1c:3b5:2501:7c71:2908:626e:a36
Name:	ngrok-free.app
Address: 2406:da1c:3b5:2500:a818:a4c2:40e9:9430
Name:	ngrok-free.app
Address: 2406:da1c:3b5:2502:9a1c:3f34:79bb:960f
Name:	ngrok-free.app
Address: 2406:da1c:3b5:2500:88f9:cf2d:3bd1:c19b