--- service: i.root-servers.net start-period: '2014-09-23T00:00:00Z' end-period: '2014-09-24T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3289730714 dns-udp-queries-received-ipv6: 221636682 dns-tcp-queries-received-ipv4: 6756257 dns-tcp-queries-received-ipv6: 164079 dns-udp-responses-sent-ipv4: 3233581304 dns-udp-responses-sent-ipv6: 225948314 dns-tcp-responses-sent-ipv4: 6984368 dns-tcp-responses-sent-ipv6: 164489