--- service: i.root-servers.net start-period: '2015-05-24T00:00:00Z' end-period: '2015-05-25T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3089097875 dns-udp-queries-received-ipv6: 224564384 dns-tcp-queries-received-ipv4: 11603308 dns-tcp-queries-received-ipv6: 282411 dns-udp-responses-sent-ipv4: 3043296562 dns-udp-responses-sent-ipv6: 227095487 dns-tcp-responses-sent-ipv4: 11685977 dns-tcp-responses-sent-ipv6: 287929