--- service: i.root-servers.net start-period: '2013-11-23T00:00:00Z' end-period: '2013-11-24T00:00:07Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1962318094 dns-udp-queries-received-ipv6: 122298105 dns-tcp-queries-received-ipv4: 4578850 dns-tcp-queries-received-ipv6: 229951 dns-udp-responses-sent-ipv4: 2024847074 dns-udp-responses-sent-ipv6: 133394879 dns-tcp-responses-sent-ipv4: 4580112 dns-tcp-responses-sent-ipv6: 238622