--- service: j.root-servers.net start-period: '2014-12-25T00:00:00Z' end-period: '2014-12-25T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3015737998 dns-udp-queries-received-ipv6: 155303372 dns-tcp-queries-received-ipv4: 27844548 dns-tcp-queries-received-ipv6: 5526838 dns-udp-responses-sent-ipv4: 3015042304 dns-udp-responses-sent-ipv6: 154350074 dns-tcp-responses-sent-ipv4: 27792398 dns-tcp-responses-sent-ipv6: 4779012