--- service: a.root-servers.net start-period: '2016-06-06T00:00:00Z' end-period: '2016-06-06T23:59:59Z' metric: rcode-volume 0: 1901972914 1: 1379185 2: 2523 3: 4305324000 4: 1169873 5: 1036764 6: 1873 7: 2414 8: 2284 9: 2020 10: 2359 11: 2146 12: 2327 13: 2364 14: 1944 15: 2221 16: 16