--- service: i.root-servers.net start-period: '2015-10-23T00:00:00Z' end-period: '2015-10-24T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4591022318 dns-udp-queries-received-ipv6: 329505750 dns-tcp-queries-received-ipv4: 33137641 dns-tcp-queries-received-ipv6: 513146 dns-udp-responses-sent-ipv4: 4534370967 dns-udp-responses-sent-ipv6: 329470864 dns-tcp-responses-sent-ipv4: 33129762 dns-tcp-responses-sent-ipv6: 519236