--- service: a.root-servers.net start-period: '2016-06-09T00:00:00Z' end-period: '2016-06-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5777456680 dns-udp-queries-received-ipv6: 451312199 dns-tcp-queries-received-ipv4: 80061057 dns-tcp-queries-received-ipv6: 5444407 dns-udp-responses-sent-ipv4: 5776520546 dns-udp-responses-sent-ipv6: 450987821 dns-tcp-responses-sent-ipv4: 67692759 dns-tcp-responses-sent-ipv6: 313891