--- service: i.root-servers.net start-period: '2015-02-23T00:00:00Z' end-period: '2015-02-24T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3440023614 dns-udp-queries-received-ipv6: 261205425 dns-tcp-queries-received-ipv4: 7039749 dns-tcp-queries-received-ipv6: 209076 dns-udp-responses-sent-ipv4: 3393025072 dns-udp-responses-sent-ipv6: 261098693 dns-tcp-responses-sent-ipv4: 7093940 dns-tcp-responses-sent-ipv6: 218789