--- service: j.root-servers.net start-period: '2015-04-11T00:00:00Z' end-period: '2015-04-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2827014154 dns-udp-queries-received-ipv6: 309504502 dns-tcp-queries-received-ipv4: 21134570 dns-tcp-queries-received-ipv6: 6206211 dns-udp-responses-sent-ipv4: 2762603403 dns-udp-responses-sent-ipv6: 309581940 dns-tcp-responses-sent-ipv4: 20772358 dns-tcp-responses-sent-ipv6: 4224667