--- service: i.root-servers.net start-period: '2014-05-11T00:00:00Z' end-period: '2014-05-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2323843704 dns-udp-queries-received-ipv6: 199706047 dns-tcp-queries-received-ipv4: 6055994 dns-tcp-queries-received-ipv6: 239989 dns-udp-responses-sent-ipv4: 2274135196 dns-udp-responses-sent-ipv6: 202145966 dns-tcp-responses-sent-ipv4: 6102667 dns-tcp-responses-sent-ipv6: 242421