--- service: b.root-servers.net start-period: 2016-06-05T00:00:00Z end-period: 2016-06-05T23:59:59Z metric: rcode-volume rcodes: 0: 792614659 1: 2143929 11: 1 12: 2 14: 2 15: 1 2: 1 3: 1786052584 4: 1979 5: 1449650 8: 1 9: 22822