--- service: i.root-servers.net start-period: '2015-05-08T00:00:00Z' end-period: '2015-05-09T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3692575683 dns-udp-queries-received-ipv6: 252016669 dns-tcp-queries-received-ipv4: 11075334 dns-tcp-queries-received-ipv6: 259657 dns-udp-responses-sent-ipv4: 3635567971 dns-udp-responses-sent-ipv6: 255276626 dns-tcp-responses-sent-ipv4: 11140420 dns-tcp-responses-sent-ipv6: 262825