--- service: i.root-servers.net start-period: '2013-11-30T00:00:00Z' end-period: '2013-12-01T00:00:08Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1922372759 dns-udp-queries-received-ipv6: 121194733 dns-tcp-queries-received-ipv4: 4490514 dns-tcp-queries-received-ipv6: 227479 dns-udp-responses-sent-ipv4: 1982989232 dns-udp-responses-sent-ipv6: 132233584 dns-tcp-responses-sent-ipv4: 4488231 dns-tcp-responses-sent-ipv6: 236163