--- service: i.root-servers.net start-period: '2013-08-28T00:00:00Z' end-period: '2013-08-29T00:00:10Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2302182747 dns-udp-queries-received-ipv6: 148917757 dns-tcp-queries-received-ipv4: 4967747 dns-tcp-queries-received-ipv6: 171868 dns-udp-responses-sent-ipv4: 2260460934 dns-udp-responses-sent-ipv6: 148882280 dns-tcp-responses-sent-ipv4: 4961882 dns-tcp-responses-sent-ipv6: 173284