--- service: i.root-servers.net start-period: '2015-03-03T00:00:00Z' end-period: '2015-03-04T00:00:15Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3545996084 dns-udp-queries-received-ipv6: 257446174 dns-tcp-queries-received-ipv4: 7382683 dns-tcp-queries-received-ipv6: 232148 dns-udp-responses-sent-ipv4: 3505872629 dns-udp-responses-sent-ipv6: 257419747 dns-tcp-responses-sent-ipv4: 7438584 dns-tcp-responses-sent-ipv6: 239377