--- service: d.root-servers.net start-period: '2015-12-03T00:00:00Z' end-period: '2015-12-03T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4229659454 dns-udp-queries-received-ipv6: 411905115 dns-tcp-queries-received-ipv4: 21919899 dns-tcp-queries-received-ipv6: 614997 dns-udp-responses-sent-ipv4: 4208724899 dns-udp-responses-sent-ipv6: 411567253 dns-tcp-responses-sent-ipv4: 21569063 dns-tcp-responses-sent-ipv6: 614330