--- service: j.root-servers.net start-period: '2015-12-16T00:00:00Z' end-period: '2015-12-16T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4343618537 dns-udp-queries-received-ipv6: 561105919 dns-tcp-queries-received-ipv4: 93136266 dns-tcp-queries-received-ipv6: 2510791 dns-udp-responses-sent-ipv4: 4226518364 dns-udp-responses-sent-ipv6: 565102250 dns-tcp-responses-sent-ipv4: 79535362 dns-tcp-responses-sent-ipv6: 306427