ff00.net.		30 IN SOA ns-1387.awsdns-45.org. awsdns-hostmaster.amazon.com. (
				1          ; serial
				7200       ; refresh (2 hours)
				900        ; retry (15 minutes)
				1209600    ; expire (2 weeks)
				86400      ; minimum (1 day)
				)

Name servers:
ff00.net.		30 IN NS ns-1387.awsdns-45.org.
ff00.net.		30 IN NS ns-1911.awsdns-46.co.uk.
ff00.net.		30 IN NS ns-265.awsdns-33.com.
ff00.net.		30 IN NS ns-812.awsdns-37.net.