--- service: j.root-servers.net start-period: '2016-05-31T00:00:00Z' end-period: '2016-05-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4871345078 dns-udp-queries-received-ipv6: 476595238 dns-tcp-queries-received-ipv4: 155500142 dns-tcp-queries-received-ipv6: 2528892 dns-udp-responses-sent-ipv4: 4714726027 dns-udp-responses-sent-ipv6: 473844557 dns-tcp-responses-sent-ipv4: 128005642 dns-tcp-responses-sent-ipv6: 576701