shell:$ nslookup -timeout=2 -retry=1 'push-rtmp-f5.tiktokcdn.com.c.worldfcdn.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
push-rtmp-f5.tiktokcdn.com.c.worldfcdn.com	canonical name = push-fcdn-base-oversea.s.worldfcdn.com.
push-fcdn-base-oversea.s.worldfcdn.com	canonical name = push-graveyard.s.bytefcdn-oversea.com.
Name:	push-graveyard.s.bytefcdn-oversea.com
Address: 128.14.102.202