--- service: i.root-servers.net start-period: '2013-04-24T00:00:00Z' end-period: '2013-04-25T00:00:12Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1621535844 dns-udp-queries-received-ipv6: 82637333 dns-tcp-queries-received-ipv4: 3108868 dns-tcp-queries-received-ipv6: 112902 dns-udp-responses-sent-ipv4: 1620805803 dns-udp-responses-sent-ipv6: 86497518 dns-tcp-responses-sent-ipv4: 2918341 dns-tcp-responses-sent-ipv6: 113964