--- service: d.root-servers.net start-period: '2016-04-07T00:00:00Z' end-period: '2016-04-07T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4721076581 dns-udp-queries-received-ipv6: 617039105 dns-tcp-queries-received-ipv4: 38397585 dns-tcp-queries-received-ipv6: 601933 dns-udp-responses-sent-ipv4: 4699632049 dns-udp-responses-sent-ipv6: 616773994 dns-tcp-responses-sent-ipv4: 38335974 dns-tcp-responses-sent-ipv6: 601907