--- service: i.root-servers.net start-period: '2015-08-14T00:00:00Z' end-period: '2015-08-15T00:00:12Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3595607612 dns-udp-queries-received-ipv6: 266702186 dns-tcp-queries-received-ipv4: 30665107 dns-tcp-queries-received-ipv6: 349080 dns-udp-responses-sent-ipv4: 5159878360 dns-udp-responses-sent-ipv6: 266689566 dns-tcp-responses-sent-ipv4: 30699928 dns-tcp-responses-sent-ipv6: 353718