--- service: j.root-servers.net start-period: '2015-06-04T00:00:00Z' end-period: '2015-06-04T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2969791552 dns-udp-queries-received-ipv6: 208790467 dns-tcp-queries-received-ipv4: 26762587 dns-tcp-queries-received-ipv6: 7018564 dns-udp-responses-sent-ipv4: 2900203464 dns-udp-responses-sent-ipv6: 208720335 dns-tcp-responses-sent-ipv4: 25911344 dns-tcp-responses-sent-ipv6: 5185006