--- service: j.root-servers.net start-period: '2014-12-31T00:00:00Z' end-period: '2014-12-31T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2991024240 dns-udp-queries-received-ipv6: 227914399 dns-tcp-queries-received-ipv4: 29468717 dns-tcp-queries-received-ipv6: 5538063 dns-udp-responses-sent-ipv4: 2994523049 dns-udp-responses-sent-ipv6: 227906524 dns-tcp-responses-sent-ipv4: 29538200 dns-tcp-responses-sent-ipv6: 4856415