hkix.net.		30 IN SOA ddi.itsc.cuhk.edu.hk. hkix-noc.cuhk.edu.hk. (
				201705147  ; serial
				86400      ; refresh (1 day)
				1800       ; retry (30 minutes)
				3600000    ; expire (5 weeks 6 days 16 hours)
				600        ; minimum (10 minutes)
				)

hkix.net.		30 IN TXT "v=spf1 include:spf.protection.outlook.com ip4:137.189.0.0/16
ip6:2405:3000:3::/48 ip4:202.45.189.128/27 ip6:2405:3001:1:1A9::/124 ?all"

Mail exchangers:
hkix.net.		30 IN MX 0 hkix-net.mail.protection.outlook.com.

Name servers:
hkix.net.		30 IN NS dns2.cuhk.edu.hk.
hkix.net.		30 IN NS ns8.gdnsdef.com.
hkix.net.		30 IN NS ns9.gdnsec.com.
hkix.net.		30 IN NS dns1.cuhk.edu.hk.