--- service: i.root-servers.net start-period: '2015-02-11T00:00:00Z' end-period: '2015-02-11T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3620937821 dns-udp-queries-received-ipv6: 262322209 dns-tcp-queries-received-ipv4: 7178181 dns-tcp-queries-received-ipv6: 230890 dns-udp-responses-sent-ipv4: 3567805867 dns-udp-responses-sent-ipv6: 262280283 dns-tcp-responses-sent-ipv4: 7208572 dns-tcp-responses-sent-ipv6: 238212