--- service: j.root-servers.net start-period: '2016-12-21T00:00:00Z' end-period: '2016-12-21T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 6652518541 dns-udp-queries-received-ipv6: 625273881 dns-tcp-queries-received-ipv4: 231909190 dns-tcp-queries-received-ipv6: 11957693 dns-udp-responses-sent-ipv4: 6484167001 dns-udp-responses-sent-ipv6: 629869649 dns-tcp-responses-sent-ipv4: 204301179 dns-tcp-responses-sent-ipv6: 12182222