--- service: j.root-servers.net start-period: '2013-12-29T00:00:00Z' end-period: '2013-12-29T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2234641317 dns-udp-queries-received-ipv6: 152800366 dns-tcp-queries-received-ipv4: 21829645 dns-tcp-queries-received-ipv6: 2595075 dns-udp-responses-sent-ipv4: 2227067152 dns-udp-responses-sent-ipv6: 152763618 dns-tcp-responses-sent-ipv4: 20194935 dns-tcp-responses-sent-ipv6: 250