--- service: i.root-servers.net start-period: '2016-05-26T00:00:00Z' end-period: '2016-05-27T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6518536843 dns-udp-queries-received-ipv6: 463272645 dns-tcp-queries-received-ipv4: 24573764 dns-tcp-queries-received-ipv6: 777087 dns-udp-responses-sent-ipv4: 6478270860 dns-udp-responses-sent-ipv6: 471465426 dns-tcp-responses-sent-ipv4: 24809448 dns-tcp-responses-sent-ipv6: 781331