class.lk.		30 IN SOA ns-1881.awsdns-43.co.uk. awsdns-hostmaster.amazon.com. (
				1          ; serial
				7200       ; refresh (2 hours)
				900        ; retry (15 minutes)
				1209600    ; expire (2 weeks)
				86400      ; minimum (1 day)
				)

class.lk.		30 IN A	64.225.86.56

Name servers:
class.lk.		30 IN NS ns-1430.awsdns-50.org.
class.lk.		30 IN NS ns-1881.awsdns-43.co.uk.
class.lk.		30 IN NS ns-490.awsdns-61.com.
class.lk.		30 IN NS ns-514.awsdns-00.net.