--- service: i.root-servers.net start-period: '2016-01-27T00:00:00Z' end-period: '2016-01-27T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4910986476 dns-udp-queries-received-ipv6: 378584056 dns-tcp-queries-received-ipv4: 28255495 dns-tcp-queries-received-ipv6: 858814 dns-udp-responses-sent-ipv4: 4847166063 dns-udp-responses-sent-ipv6: 382369878 dns-tcp-responses-sent-ipv4: 28140914 dns-tcp-responses-sent-ipv6: 861518