--- service: d.root-servers.net start-period: '2016-04-03T00:00:00Z' end-period: '2016-04-03T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4128462919 dns-udp-queries-received-ipv6: 575296513 dns-tcp-queries-received-ipv4: 33220159 dns-tcp-queries-received-ipv6: 519729 dns-udp-responses-sent-ipv4: 4106803755 dns-udp-responses-sent-ipv6: 575041096 dns-tcp-responses-sent-ipv4: 33158165 dns-tcp-responses-sent-ipv6: 519709