--- service: i.root-servers.net start-period: '2015-06-07T00:00:00Z' end-period: '2015-06-08T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3330406029 dns-udp-queries-received-ipv6: 231065447 dns-tcp-queries-received-ipv4: 10445910 dns-tcp-queries-received-ipv6: 271528 dns-udp-responses-sent-ipv4: 3274321859 dns-udp-responses-sent-ipv6: 235317599 dns-tcp-responses-sent-ipv4: 10466032 dns-tcp-responses-sent-ipv6: 278603