--- service: i.root-servers.net start-period: '2015-05-25T00:00:00Z' end-period: '2015-05-26T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3593686825 dns-udp-queries-received-ipv6: 244175651 dns-tcp-queries-received-ipv4: 12041629 dns-tcp-queries-received-ipv6: 295060 dns-udp-responses-sent-ipv4: 3544089918 dns-udp-responses-sent-ipv6: 246637266 dns-tcp-responses-sent-ipv4: 12121668 dns-tcp-responses-sent-ipv6: 299717