--- service: i.root-servers.net start-period: '2013-07-14T00:00:00Z' end-period: '2013-07-15T00:01:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1743465705 dns-udp-queries-received-ipv6: 128802981 dns-tcp-queries-received-ipv4: 3936478 dns-tcp-queries-received-ipv6: 143846 dns-udp-responses-sent-ipv4: 1698318148 dns-udp-responses-sent-ipv6: 128285620 dns-tcp-responses-sent-ipv4: 3911722 dns-tcp-responses-sent-ipv6: 145961