--- service: i.root-servers.net start-period: '2013-12-02T00:00:00Z' end-period: '2013-12-03T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2336735917 dns-udp-queries-received-ipv6: 134163973 dns-tcp-queries-received-ipv4: 4849600 dns-tcp-queries-received-ipv6: 242117 dns-udp-responses-sent-ipv4: 2400849231 dns-udp-responses-sent-ipv6: 146125617 dns-tcp-responses-sent-ipv4: 4846602 dns-tcp-responses-sent-ipv6: 250245