--- service: i.root-servers.net start-period: '2013-07-10T00:00:00Z' end-period: '2013-07-11T00:01:22Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2184327508 dns-udp-queries-received-ipv6: 143541076 dns-tcp-queries-received-ipv4: 4682204 dns-tcp-queries-received-ipv6: 156752 dns-udp-responses-sent-ipv4: 2122619705 dns-udp-responses-sent-ipv6: 143508786 dns-tcp-responses-sent-ipv4: 4685030 dns-tcp-responses-sent-ipv6: 158304