--- service: a.root-servers.net start-period: '2016-05-06T00:00:00Z' end-period: '2016-05-06T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4617023378 dns-udp-queries-received-ipv6: 347583448 dns-tcp-queries-received-ipv4: 37851609 dns-tcp-queries-received-ipv6: 4855629 dns-udp-responses-sent-ipv4: 4616578952 dns-udp-responses-sent-ipv6: 347166425 dns-tcp-responses-sent-ipv4: 32089624 dns-tcp-responses-sent-ipv6: 558084