--- service: i.root-servers.net start-period: '2016-02-08T00:00:00Z' end-period: '2016-02-09T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4679060397 dns-udp-queries-received-ipv6: 378031718 dns-tcp-queries-received-ipv4: 27913272 dns-tcp-queries-received-ipv6: 817751 dns-udp-responses-sent-ipv4: 4617462395 dns-udp-responses-sent-ipv6: 384283277 dns-tcp-responses-sent-ipv4: 27962086 dns-tcp-responses-sent-ipv6: 820637