--- service: i.root-servers.net start-period: '2014-05-12T00:00:00Z' end-period: '2014-05-13T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2703099626 dns-udp-queries-received-ipv6: 190866168 dns-tcp-queries-received-ipv4: 6370389 dns-tcp-queries-received-ipv6: 255276 dns-udp-responses-sent-ipv4: 2648092405 dns-udp-responses-sent-ipv6: 193648799 dns-tcp-responses-sent-ipv4: 6440015 dns-tcp-responses-sent-ipv6: 257537