--- service: i.root-servers.net start-period: '2016-01-23T00:00:00Z' end-period: '2016-01-24T00:00:07Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4143028816 dns-udp-queries-received-ipv6: 347460731 dns-tcp-queries-received-ipv4: 21295641 dns-tcp-queries-received-ipv6: 825646 dns-udp-responses-sent-ipv4: 4088597716 dns-udp-responses-sent-ipv6: 350777712 dns-tcp-responses-sent-ipv4: 21340164 dns-tcp-responses-sent-ipv6: 830237