--- service: i.root-servers.net start-period: '2014-01-10T00:00:00Z' end-period: '2014-01-11T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2706443683 dns-udp-queries-received-ipv6: 149095060 dns-tcp-queries-received-ipv4: 5325181 dns-tcp-queries-received-ipv6: 253935 dns-udp-responses-sent-ipv4: 2647881036 dns-udp-responses-sent-ipv6: 149260596 dns-tcp-responses-sent-ipv4: 5333464 dns-tcp-responses-sent-ipv6: 257777