--- service: i.root-servers.net start-period: '2016-03-27T00:00:00Z' end-period: '2016-03-28T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4603720359 dns-udp-queries-received-ipv6: 375937133 dns-tcp-queries-received-ipv4: 20520069 dns-tcp-queries-received-ipv6: 738988 dns-udp-responses-sent-ipv4: 4476677088 dns-udp-responses-sent-ipv6: 385485821 dns-tcp-responses-sent-ipv4: 18571651 dns-tcp-responses-sent-ipv6: 745231