--- service: j.root-servers.net start-period: '2016-05-19T00:00:00Z' end-period: '2016-05-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 7617033652 dns-udp-queries-received-ipv6: 761407750 dns-tcp-queries-received-ipv4: 255688790 dns-tcp-queries-received-ipv6: 3563758 dns-udp-responses-sent-ipv4: 7289524431 dns-udp-responses-sent-ipv6: 759438204 dns-tcp-responses-sent-ipv4: 202487128 dns-tcp-responses-sent-ipv6: 670168