--- service: h.root-servers.net metric: rcode-volume start-period: '2015-12-31T00:00:00Z' end-period: '2015-12-31T23:59:59Z' rcodes: 0: 740552696 1: 1094095 16: 28 2: 31158 3: 2026094286 4: 956737 5: 32613 9: 8