--- service: i.root-servers.net start-period: '2013-11-26T00:00:00Z' end-period: '2013-11-27T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2419125806 dns-udp-queries-received-ipv6: 137080311 dns-tcp-queries-received-ipv4: 5102027 dns-tcp-queries-received-ipv6: 245769 dns-udp-responses-sent-ipv4: 2490947052 dns-udp-responses-sent-ipv6: 148622631 dns-tcp-responses-sent-ipv4: 5110340 dns-tcp-responses-sent-ipv6: 254404