--- service: j.root-servers.net start-period: '2013-12-25T00:00:00Z' end-period: '2013-12-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2501317542 dns-udp-queries-received-ipv6: 152127781 dns-tcp-queries-received-ipv4: 22072642 dns-tcp-queries-received-ipv6: 2511422 dns-udp-responses-sent-ipv4: 2496861529 dns-udp-responses-sent-ipv6: 152092629 dns-tcp-responses-sent-ipv4: 21251268 dns-tcp-responses-sent-ipv6: 317