--- service: i.root-servers.net start-period: '2016-04-09T00:00:00Z' end-period: '2016-04-10T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4859628253 dns-udp-queries-received-ipv6: 428968725 dns-tcp-queries-received-ipv4: 35266679 dns-tcp-queries-received-ipv6: 803275 dns-udp-responses-sent-ipv4: 4844440238 dns-udp-responses-sent-ipv6: 428574978 dns-tcp-responses-sent-ipv4: 33862870 dns-tcp-responses-sent-ipv6: 808125