--- service: j.root-servers.net start-period: '2015-01-18T00:00:00Z' end-period: '2015-01-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3060868561 dns-udp-queries-received-ipv6: 238886810 dns-tcp-queries-received-ipv4: 28231886 dns-tcp-queries-received-ipv6: 5459764 dns-udp-responses-sent-ipv4: 3055645732 dns-udp-responses-sent-ipv6: 238871452 dns-tcp-responses-sent-ipv4: 28269315 dns-tcp-responses-sent-ipv6: 4844546