--- service: i.root-servers.net start-period: '2013-05-14T00:00:00Z' end-period: '2013-05-14T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2157659042 dns-udp-queries-received-ipv6: 109863670 dns-tcp-queries-received-ipv4: 3118625 dns-tcp-queries-received-ipv6: 131787 dns-udp-responses-sent-ipv4: 2165486674 dns-udp-responses-sent-ipv6: 117041346 dns-tcp-responses-sent-ipv4: 3461995 dns-tcp-responses-sent-ipv6: 133335