--- service: i.root-servers.net start-period: '2015-07-07T00:00:00Z' end-period: '2015-07-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3838500603 dns-udp-queries-received-ipv6: 272223708 dns-tcp-queries-received-ipv4: 11515154 dns-tcp-queries-received-ipv6: 277082 dns-udp-responses-sent-ipv4: 3794543685 dns-udp-responses-sent-ipv6: 272182889 dns-tcp-responses-sent-ipv4: 11307641 dns-tcp-responses-sent-ipv6: 277334