--- service: i.root-servers.net start-period: '2013-06-09T00:00:00Z' end-period: '2013-06-09T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1845019488 dns-udp-queries-received-ipv6: 99696754 dns-tcp-queries-received-ipv4: 3014788 dns-tcp-queries-received-ipv6: 132534 dns-udp-responses-sent-ipv4: 1846957827 dns-udp-responses-sent-ipv6: 105370092 dns-tcp-responses-sent-ipv4: 3136926 dns-tcp-responses-sent-ipv6: 136351