--- service: a.root-servers.net start-period: '2016-02-16T00:00:00Z' end-period: '2016-02-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5308635514 dns-udp-queries-received-ipv6: 339849915 dns-tcp-queries-received-ipv4: 79359526 dns-tcp-queries-received-ipv6: 2096656 dns-udp-responses-sent-ipv4: 5299860324 dns-udp-responses-sent-ipv6: 339664595 dns-tcp-responses-sent-ipv4: 68940839 dns-tcp-responses-sent-ipv6: 283294