--- service: j.root-servers.net start-period: '2015-12-29T00:00:00Z' end-period: '2015-12-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3524101613 dns-udp-queries-received-ipv6: 562466404 dns-tcp-queries-received-ipv4: 58779656 dns-tcp-queries-received-ipv6: 1950988 dns-udp-responses-sent-ipv4: 3477685777 dns-udp-responses-sent-ipv6: 564974539 dns-tcp-responses-sent-ipv4: 52010254 dns-tcp-responses-sent-ipv6: 270685