--- service: i.root-servers.net start-period: '2014-04-12T00:00:00Z' end-period: '2014-04-13T00:00:07Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2406035601 dns-udp-queries-received-ipv6: 170050331 dns-tcp-queries-received-ipv4: 5875695 dns-tcp-queries-received-ipv6: 234087 dns-udp-responses-sent-ipv4: 2354618885 dns-udp-responses-sent-ipv6: 170454917 dns-tcp-responses-sent-ipv4: 5861181 dns-tcp-responses-sent-ipv6: 235590