--- service: j.root-servers.net start-period: '2016-01-21T00:00:00Z' end-period: '2016-01-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5005908234 dns-udp-queries-received-ipv6: 569564703 dns-tcp-queries-received-ipv4: 92490829 dns-tcp-queries-received-ipv6: 2030874 dns-udp-responses-sent-ipv4: 4620151966 dns-udp-responses-sent-ipv6: 574639045 dns-tcp-responses-sent-ipv4: 80746805 dns-tcp-responses-sent-ipv6: 325536