--- service: i.root-servers.net start-period: '2013-06-29T00:00:00Z' end-period: '2013-06-30T00:02:23Z' metric: traffic-volume dns-udp-queries-received-ipv4: 1732326322 dns-udp-queries-received-ipv6: 97086798 dns-tcp-queries-received-ipv4: 2518891 dns-tcp-queries-received-ipv6: 146562 dns-udp-responses-sent-ipv4: 1739582449 dns-udp-responses-sent-ipv6: 103790079 dns-tcp-responses-sent-ipv4: 2786151 dns-tcp-responses-sent-ipv6: 149064