--- service: i.root-servers.net start-period: '2014-02-10T00:00:00Z' end-period: '2014-02-11T00:00:05Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2564022312 dns-udp-queries-received-ipv6: 158910860 dns-tcp-queries-received-ipv4: 4950765 dns-tcp-queries-received-ipv6: 272486 dns-udp-responses-sent-ipv4: 2507063680 dns-udp-responses-sent-ipv6: 158988455 dns-tcp-responses-sent-ipv4: 4979036 dns-tcp-responses-sent-ipv6: 274359