--- service: i.root-servers.net start-period: '2016-02-13T00:00:00Z' end-period: '2016-02-14T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4176678767 dns-udp-queries-received-ipv6: 373962955 dns-tcp-queries-received-ipv4: 18711387 dns-tcp-queries-received-ipv6: 896330 dns-udp-responses-sent-ipv4: 4153125900 dns-udp-responses-sent-ipv6: 375726818 dns-tcp-responses-sent-ipv4: 18739410 dns-tcp-responses-sent-ipv6: 899461