--- service: i.root-servers.net start-period: '2014-12-24T00:00:00Z' end-period: '2014-12-25T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2748274859 dns-udp-queries-received-ipv6: 217347076 dns-tcp-queries-received-ipv4: 6989454 dns-tcp-queries-received-ipv6: 180314 dns-udp-responses-sent-ipv4: 2733253544 dns-udp-responses-sent-ipv6: 217302542 dns-tcp-responses-sent-ipv4: 7156566 dns-tcp-responses-sent-ipv6: 183209