chatservice.ru.		30 IN SOA ns1.reg.ru. hostmaster.ns1.reg.ru. (
				1728490886 ; serial
				14400      ; refresh (4 hours)
				3600       ; retry (1 hour)
				604800     ; expire (1 week)
				10800      ; minimum (3 hours)
				)

Name servers:
chatservice.ru.		30 IN NS ns1.reg.ru.
chatservice.ru.		30 IN NS ns2.reg.ru.