ctr.hk.			30 IN SOA barbara.ns.cloudflare.com. dns.cloudflare.com. (
				2355681153 ; serial
				10000      ; refresh (2 hours 46 minutes 40 seconds)
				2400       ; retry (40 minutes)
				604800     ; expire (1 week)
				1800       ; minimum (30 minutes)
				)

ctr.hk.			30 IN TXT "v=spf1 a mx ip4:103.11.103.158 ~all"

ctr.hk.			30 IN A	172.67.203.206
ctr.hk.			30 IN A	104.21.14.157
ctr.hk.			30 IN AAAA 2606:4700:3031::ac43:cbce
ctr.hk.			30 IN AAAA 2606:4700:3036::6815:e9d

Mail exchangers:
ctr.hk.			30 IN MX 10 _dc-mx.1a5ef0fea0dc.ctr.hk.

Name servers:
ctr.hk.			30 IN NS barbara.ns.cloudflare.com.
ctr.hk.			30 IN NS phil.ns.cloudflare.com.