--- service: i.root-servers.net start-period: '2014-04-22T00:00:00Z' end-period: '2014-04-23T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2903011833 dns-udp-queries-received-ipv6: 178264808 dns-tcp-queries-received-ipv4: 5787428 dns-tcp-queries-received-ipv6: 260930 dns-udp-responses-sent-ipv4: 2859216392 dns-udp-responses-sent-ipv6: 180377835 dns-tcp-responses-sent-ipv4: 5803176 dns-tcp-responses-sent-ipv6: 261237