study-cz.ru.		30 IN SOA deb.ns.cloudflare.com. dns.cloudflare.com. (
				2386803611 ; serial
				10000      ; refresh (2 hours 46 minutes 40 seconds)
				2400       ; retry (40 minutes)
				604800     ; expire (1 week)
				1800       ; minimum (30 minutes)
				)

study-cz.ru.		30 IN A	172.67.132.102
study-cz.ru.		30 IN A	104.21.12.206

Name servers:
study-cz.ru.		30 IN NS deb.ns.cloudflare.com.
study-cz.ru.		30 IN NS sevki.ns.cloudflare.com.