--- service: i.root-servers.net start-period: '2014-04-02T00:00:00Z' end-period: '2014-04-03T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3047106211 dns-udp-queries-received-ipv6: 190817721 dns-tcp-queries-received-ipv4: 7014669 dns-tcp-queries-received-ipv6: 297878 dns-udp-responses-sent-ipv4: 2982904167 dns-udp-responses-sent-ipv6: 191190341 dns-tcp-responses-sent-ipv4: 6956538 dns-tcp-responses-sent-ipv6: 299534