--- service: a.root-servers.net start-period: '2016-06-13T00:00:00Z' end-period: '2016-06-13T23:59:59Z' metric: rcode-volume 0: 1924283630 1: 821756 2: 2881 3: 4113916681 4: 322537 5: 1039296 6: 4047 7: 2960 8: 2734 9: 12396 10: 2199 11: 3279 12: 2483 13: 3856 14: 2800 15: 3431 16: 16