--- service: a.root-servers.net start-period: '2014-07-25T00:00:00Z' end-period: '2014-07-25T23:59:59Z' metric: rcode-volume 0: 976112686 1: 464689 2: 1426 3: 929499209 4: 17445 5: 874303 6: 712 7: 2763 8: 2075 9: 2692 10: 1498 11: 1391 12: 1267 13: 1597 14: 1411 15: 1156 16: 6