--- service: i.root-servers.net start-period: '2014-01-25T00:00:00Z' end-period: '2014-01-26T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2131329764 dns-udp-queries-received-ipv6: 145008164 dns-tcp-queries-received-ipv4: 4908914 dns-tcp-queries-received-ipv6: 235808 dns-udp-responses-sent-ipv4: 2085530768 dns-udp-responses-sent-ipv6: 144327104 dns-tcp-responses-sent-ipv4: 4900203 dns-tcp-responses-sent-ipv6: 238967