--- service: i.root-servers.net start-period: '2015-08-01T00:00:00Z' end-period: '2015-08-02T00:00:07Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4831285524 dns-udp-queries-received-ipv6: 250430743 dns-tcp-queries-received-ipv4: 12374633 dns-tcp-queries-received-ipv6: 252539 dns-udp-responses-sent-ipv4: 4789418562 dns-udp-responses-sent-ipv6: 252898851 dns-tcp-responses-sent-ipv4: 12266140 dns-tcp-responses-sent-ipv6: 262156