--- service: j.root-servers.net start-period: '2015-05-19T00:00:00Z' end-period: '2015-05-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3856469107 dns-udp-queries-received-ipv6: 276138097 dns-tcp-queries-received-ipv4: 25175806 dns-tcp-queries-received-ipv6: 4875984 dns-udp-responses-sent-ipv4: 3783072388 dns-udp-responses-sent-ipv6: 276029290 dns-tcp-responses-sent-ipv4: 24520399 dns-tcp-responses-sent-ipv6: 3777772