--- service: i.root-servers.net start-period: '2015-02-03T00:00:00Z' end-period: '2015-02-04T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3433926693 dns-udp-queries-received-ipv6: 249645456 dns-tcp-queries-received-ipv4: 7218285 dns-tcp-queries-received-ipv6: 201288 dns-udp-responses-sent-ipv4: 3387086110 dns-udp-responses-sent-ipv6: 249566738 dns-tcp-responses-sent-ipv4: 7270331 dns-tcp-responses-sent-ipv6: 206981