--- service: i.root-servers.net start-period: '2015-08-13T00:00:00Z' end-period: '2015-08-14T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1804020690 dns-udp-queries-received-ipv6: 143375597 dns-tcp-queries-received-ipv4: 7638811 dns-tcp-queries-received-ipv6: 200632 dns-udp-responses-sent-ipv4: 2542177187 dns-udp-responses-sent-ipv6: 143363361 dns-tcp-responses-sent-ipv4: 7656071 dns-tcp-responses-sent-ipv6: 202675