--- service: i.root-servers.net start-period: '2016-02-11T00:00:00Z' end-period: '2016-02-12T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4811295599 dns-udp-queries-received-ipv6: 400825616 dns-tcp-queries-received-ipv4: 19287397 dns-tcp-queries-received-ipv6: 913352 dns-udp-responses-sent-ipv4: 4784020022 dns-udp-responses-sent-ipv6: 402612369 dns-tcp-responses-sent-ipv4: 19356852 dns-tcp-responses-sent-ipv6: 916283