--- service: i.root-servers.net start-period: '2015-07-24T00:00:00Z' end-period: '2015-07-25T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5209606590 dns-udp-queries-received-ipv6: 237226229 dns-tcp-queries-received-ipv4: 13716412 dns-tcp-queries-received-ipv6: 284752 dns-udp-responses-sent-ipv4: 5163035862 dns-udp-responses-sent-ipv6: 241709571 dns-tcp-responses-sent-ipv4: 13709759 dns-tcp-responses-sent-ipv6: 291656