--- service: j.root-servers.net start-period: '2015-12-13T00:00:00Z' end-period: '2015-12-13T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4155624587 dns-udp-queries-received-ipv6: 541992292 dns-tcp-queries-received-ipv4: 114320688 dns-tcp-queries-received-ipv6: 2907341 dns-udp-responses-sent-ipv4: 3938009886 dns-udp-responses-sent-ipv6: 543868512 dns-tcp-responses-sent-ipv4: 103230021 dns-tcp-responses-sent-ipv6: 428849