shell:$ nslookup -timeout=2 -retry=1 'v19-us.tiktokcdn.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
v19-us.tiktokcdn.com	canonical name = video.bytedance.map.fastly.net.
Name:	video.bytedance.map.fastly.net
Address: 151.101.126.73