--- service: i.root-servers.net start-period: '2013-05-25T00:00:00Z' end-period: '2013-05-26T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1905997302 dns-udp-queries-received-ipv6: 97047278 dns-tcp-queries-received-ipv4: 3101416 dns-tcp-queries-received-ipv6: 124466 dns-udp-responses-sent-ipv4: 1897543545 dns-udp-responses-sent-ipv6: 104212792 dns-tcp-responses-sent-ipv4: 3387488 dns-tcp-responses-sent-ipv6: 124886