--- service: d.root-servers.net start-period: '2016-04-29T00:00:00Z' end-period: '2016-04-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4639394378 dns-udp-queries-received-ipv6: 613096260 dns-tcp-queries-received-ipv4: 39488862 dns-tcp-queries-received-ipv6: 645441 dns-udp-responses-sent-ipv4: 4620661094 dns-udp-responses-sent-ipv6: 612854624 dns-tcp-responses-sent-ipv4: 39390101 dns-tcp-responses-sent-ipv6: 644930