--- service: i.root-servers.net start-period: '2014-05-13T00:00:00Z' end-period: '2014-05-14T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2789305466 dns-udp-queries-received-ipv6: 190012732 dns-tcp-queries-received-ipv4: 6465431 dns-tcp-queries-received-ipv6: 248976 dns-udp-responses-sent-ipv4: 2731116911 dns-udp-responses-sent-ipv6: 193211086 dns-tcp-responses-sent-ipv4: 6503029 dns-tcp-responses-sent-ipv6: 250920