--- service: i.root-servers.net start-period: '2014-04-13T00:00:00Z' end-period: '2014-04-14T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2813873879 dns-udp-queries-received-ipv6: 174428658 dns-tcp-queries-received-ipv4: 6090079 dns-tcp-queries-received-ipv6: 236959 dns-udp-responses-sent-ipv4: 2762571690 dns-udp-responses-sent-ipv6: 174653652 dns-tcp-responses-sent-ipv4: 5973177 dns-tcp-responses-sent-ipv6: 238503