--- service: i.root-servers.net start-period: '2014-07-10T00:00:00Z' end-period: '2014-07-11T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3901415635 dns-udp-queries-received-ipv6: 253666980 dns-tcp-queries-received-ipv4: 11952752 dns-tcp-queries-received-ipv6: 410967 dns-udp-responses-sent-ipv4: 3839501338 dns-udp-responses-sent-ipv6: 253199154 dns-tcp-responses-sent-ipv4: 11997744 dns-tcp-responses-sent-ipv6: 414008