--- service: i.root-servers.net start-period: '2015-01-24T00:00:00Z' end-period: '2015-01-25T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2887757977 dns-udp-queries-received-ipv6: 230096063 dns-tcp-queries-received-ipv4: 5988182 dns-tcp-queries-received-ipv6: 196018 dns-udp-responses-sent-ipv4: 2866198248 dns-udp-responses-sent-ipv6: 230922078 dns-tcp-responses-sent-ipv4: 6016656 dns-tcp-responses-sent-ipv6: 203665