--- service: i.root-servers.net start-period: '2015-02-14T00:00:00Z' end-period: '2015-02-15T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3050084139 dns-udp-queries-received-ipv6: 240640630 dns-tcp-queries-received-ipv4: 6510846 dns-tcp-queries-received-ipv6: 188829 dns-udp-responses-sent-ipv4: 3006530905 dns-udp-responses-sent-ipv6: 240602532 dns-tcp-responses-sent-ipv4: 6559804 dns-tcp-responses-sent-ipv6: 199366