dot.tf.			3600 IN	SOA dns31.cloudns.net. support.cloudns.net. (
				2019111505 ; serial
				7200       ; refresh (2 hours)
				1800       ; retry (30 minutes)
				1209600    ; expire (2 weeks)
				3600       ; minimum (1 hour)
				)

Name servers:
dot.tf.			3600 IN	NS dns33.cloudns.net.
dot.tf.			3600 IN	NS dns32.cloudns.net.
dot.tf.			3600 IN	NS dns34.cloudns.net.
dot.tf.			3600 IN	NS dns31.cloudns.net.