--- service: j.root-servers.net start-period: '2015-04-20T00:00:00Z' end-period: '2015-04-20T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3303194657 dns-udp-queries-received-ipv6: 213533051 dns-tcp-queries-received-ipv4: 24372578 dns-tcp-queries-received-ipv6: 5099721 dns-udp-responses-sent-ipv4: 3260755764 dns-udp-responses-sent-ipv6: 213417277 dns-tcp-responses-sent-ipv4: 23991108 dns-tcp-responses-sent-ipv6: 4251617