--- service: b.root-servers.net start-period: 2016-06-09T00:00:00Z end-period: 2016-06-09T23:59:59Z metric: rcode-volume rcodes: 0: 1011916799 1: 1596494 2: 1 3: 1891298065 4: 2018 5: 1949380 9: 17345