--- service: i.root-servers.net start-period: '2013-06-14T00:00:00Z' end-period: '2013-06-15T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2110863799 dns-udp-queries-received-ipv6: 109863662 dns-tcp-queries-received-ipv4: 3905979 dns-tcp-queries-received-ipv6: 150413 dns-udp-responses-sent-ipv4: 2112449029 dns-udp-responses-sent-ipv6: 116398515 dns-tcp-responses-sent-ipv4: 4054654 dns-tcp-responses-sent-ipv6: 153802