--- service: i.root-servers.net start-period: '2015-02-06T00:00:00Z' end-period: '2015-02-07T00:00:34Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3317110809 dns-udp-queries-received-ipv6: 257870477 dns-tcp-queries-received-ipv4: 7335681 dns-tcp-queries-received-ipv6: 211973 dns-udp-responses-sent-ipv4: 3264834892 dns-udp-responses-sent-ipv6: 257814358 dns-tcp-responses-sent-ipv4: 7397174 dns-tcp-responses-sent-ipv6: 217760