--- service: j.root-servers.net start-period: '2016-05-21T00:00:00Z' end-period: '2016-05-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6910460153 dns-udp-queries-received-ipv6: 708119599 dns-tcp-queries-received-ipv4: 212065181 dns-tcp-queries-received-ipv6: 3130046 dns-udp-responses-sent-ipv4: 6699283156 dns-udp-responses-sent-ipv6: 706960619 dns-tcp-responses-sent-ipv4: 166251251 dns-tcp-responses-sent-ipv6: 576210