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: 54.232.94.80
Name:	ngrok-free.app
Address: 18.228.194.8
Name:	ngrok-free.app
Address: 177.71.135.198
Name:	ngrok-free.app
Address: 56.125.135.169
Name:	ngrok-free.app
Address: 18.228.56.32
Name:	ngrok-free.app
Address: 2600:1f16:d83:1200:a658:2829:a11c:52e8
Name:	ngrok-free.app
Address: 2600:1f16:d83:1202:318e:b97e:3530:436a
Name:	ngrok-free.app
Address: 2600:1f16:d83:1200:19d9:6ba:5b9f:5b9
Name:	ngrok-free.app
Address: 2600:1f16:d83:1202:586c:b39b:b5a4:d61f
Name:	ngrok-free.app
Address: 2600:1f16:d83:1201:6cd5:bf8e:1af8:c9da
Name:	ngrok-free.app
Address: 2600:1f16:d83:1201:b91d:e4e5:6e14:df4