--- service: j.root-servers.net start-period: '2015-07-25T00:00:00Z' end-period: '2015-07-25T23:59:59Z' metric: rcode-volume 0: 787941187 1: 1382049 2: 1754 3: 1563171420 4: 2086 5: 698092 6: 82 7: 48 8: 147 9: 136 10: 1809 11: 88 12: 172 13: 52 14: 138 15: 403