--- service: i.root-servers.net start-period: '2014-01-09T00:00:00Z' end-period: '2014-01-10T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2613892271 dns-udp-queries-received-ipv6: 148536892 dns-tcp-queries-received-ipv4: 5076685 dns-tcp-queries-received-ipv6: 254575 dns-udp-responses-sent-ipv4: 2557967810 dns-udp-responses-sent-ipv6: 148714557 dns-tcp-responses-sent-ipv4: 5104874 dns-tcp-responses-sent-ipv6: 258807