--- service: i.root-servers.net start-period: '2014-08-17T00:00:00Z' end-period: '2014-08-18T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2680847840 dns-udp-queries-received-ipv6: 198573174 dns-tcp-queries-received-ipv4: 6796110 dns-tcp-queries-received-ipv6: 243515 dns-udp-responses-sent-ipv4: 2634016035 dns-udp-responses-sent-ipv6: 198899429 dns-tcp-responses-sent-ipv4: 6253955 dns-tcp-responses-sent-ipv6: 247010