--- service: j.root-servers.net start-period: '2015-07-06T00:00:00Z' end-period: '2015-07-06T23:59:59Z' metric: rcode-volume 0: 848606748 1: 211420 2: 733 3: 907862397 4: 865 5: 634342 6: 538 7: 235 8: 226 9: 506 10: 1407 11: 484 12: 239 13: 247 14: 231 15: 426