ab12345.net.		30 IN SOA ns1.icp100.net. root.icp100.net. (
				2018060700 ; serial
				900        ; refresh (15 minutes)
				600        ; retry (10 minutes)
				1800       ; expire (30 minutes)
				255        ; minimum (4 minutes 15 seconds)
				)

ab12345.net.		30 IN A	112.121.185.164

Name servers:
ab12345.net.		30 IN NS ns1.icp100.net.
ab12345.net.		30 IN NS ns2.icp100.net.
ab12345.net.		30 IN NS ns3.icp100.net.