--- service: h.root-servers.net metric: rcode-volume start-period: '2016-05-17T00:00:00Z' end-period: '2016-05-17T23:59:59Z' rcodes: 0: 711852112 1: 1478505 16: 8 2: 360196 3: 3317195502 4: 52 5: 4296580 9: 12