--- service: i.root-servers.net start-period: '2014-10-16T00:00:00Z' end-period: '2014-10-17T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3252187279 dns-udp-queries-received-ipv6: 223209657 dns-tcp-queries-received-ipv4: 7737201 dns-tcp-queries-received-ipv6: 255018 dns-udp-responses-sent-ipv4: 3194185829 dns-udp-responses-sent-ipv6: 226948488 dns-tcp-responses-sent-ipv4: 7850765 dns-tcp-responses-sent-ipv6: 254964