sibu.org.		30 IN SOA ns1.he.net. hostmaster.he.net. (
				2019060206 ; serial
				86400      ; refresh (1 day)
				7200       ; retry (2 hours)
				3600000    ; expire (5 weeks 6 days 16 hours)
				86400      ; minimum (1 day)
				)

Name servers:
sibu.org.		30 IN NS ns5.he.net.
sibu.org.		30 IN NS ns2.he.net.
sibu.org.		30 IN NS ns3.he.net.
sibu.org.		30 IN NS ns1.he.net.
sibu.org.		30 IN NS ns4.he.net.