--- service: d.root-servers.net start-period: '2016-05-22T00:00:00Z' end-period: '2016-05-22T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5687668948 dns-udp-queries-received-ipv6: 682397713 dns-tcp-queries-received-ipv4: 33450036 dns-tcp-queries-received-ipv6: 620637 dns-udp-responses-sent-ipv4: 5676086524 dns-udp-responses-sent-ipv6: 682145533 dns-tcp-responses-sent-ipv4: 33394651 dns-tcp-responses-sent-ipv6: 620532