webdemo.vn.		30 IN SOA beth.ns.cloudflare.com. dns.cloudflare.com. (
				2403562486 ; serial
				10000      ; refresh (2 hours 46 minutes 40 seconds)
				2400       ; retry (40 minutes)
				604800     ; expire (1 week)
				1800       ; minimum (30 minutes)
				)

webdemo.vn.		30 IN A	104.21.54.53
webdemo.vn.		30 IN A	172.67.223.218
webdemo.vn.		30 IN AAAA 2606:4700:3033::ac43:dfda
webdemo.vn.		30 IN AAAA 2606:4700:3035::6815:3635

Name servers:
webdemo.vn.		30 IN NS beth.ns.cloudflare.com.
webdemo.vn.		30 IN NS pablo.ns.cloudflare.com.