--- service: i.root-servers.net start-period: '2014-09-09T00:00:00Z' end-period: '2014-09-10T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3200307818 dns-udp-queries-received-ipv6: 218790047 dns-tcp-queries-received-ipv4: 7534320 dns-tcp-queries-received-ipv6: 269975 dns-udp-responses-sent-ipv4: 3141155922 dns-udp-responses-sent-ipv6: 218760076 dns-tcp-responses-sent-ipv4: 6908164 dns-tcp-responses-sent-ipv6: 268913