--- service: j.root-servers.net start-period: '2016-01-18T00:00:00Z' end-period: '2016-01-18T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4126257766 dns-udp-queries-received-ipv6: 553643453 dns-tcp-queries-received-ipv4: 74427400 dns-tcp-queries-received-ipv6: 2258240 dns-udp-responses-sent-ipv4: 3964148352 dns-udp-responses-sent-ipv6: 557440661 dns-tcp-responses-sent-ipv4: 63716143 dns-tcp-responses-sent-ipv6: 328225