--- service: a.root-servers.net start-period: '2016-06-17T00:00:00Z' end-period: '2016-06-17T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4704874808 dns-udp-queries-received-ipv6: 496739367 dns-tcp-queries-received-ipv4: 80039304 dns-tcp-queries-received-ipv6: 5896965 dns-udp-responses-sent-ipv4: 4704235661 dns-udp-responses-sent-ipv6: 496489334 dns-tcp-responses-sent-ipv4: 67568735 dns-tcp-responses-sent-ipv6: 357294