--- service: j.root-servers.net start-period: '2016-06-19T00:00:00Z' end-period: '2016-06-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5392184516 dns-udp-queries-received-ipv6: 397674021 dns-tcp-queries-received-ipv4: 122319227 dns-tcp-queries-received-ipv6: 4722817 dns-udp-responses-sent-ipv4: 5291103307 dns-udp-responses-sent-ipv6: 402330006 dns-tcp-responses-sent-ipv4: 115111925 dns-tcp-responses-sent-ipv6: 2626446