--- service: j.root-servers.net start-period: '2016-12-19T00:00:00Z' end-period: '2016-12-19T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6423334826 dns-udp-queries-received-ipv6: 615711498 dns-tcp-queries-received-ipv4: 214499322 dns-tcp-queries-received-ipv6: 11055249 dns-udp-responses-sent-ipv4: 6290046259 dns-udp-responses-sent-ipv6: 621048065 dns-tcp-responses-sent-ipv4: 189256943 dns-tcp-responses-sent-ipv6: 11089009