--- service: i.root-servers.net start-period: '2014-01-27T00:00:00Z' end-period: '2014-01-28T00:00:13Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2478387220 dns-udp-queries-received-ipv6: 160348758 dns-tcp-queries-received-ipv4: 5307090 dns-tcp-queries-received-ipv6: 252340 dns-udp-responses-sent-ipv4: 2424102336 dns-udp-responses-sent-ipv6: 159310570 dns-tcp-responses-sent-ipv4: 5314183 dns-tcp-responses-sent-ipv6: 254935