--- service: i.root-servers.net start-period: '2014-03-27T00:00:00Z' end-period: '2014-03-28T00:00:21Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3152092946 dns-udp-queries-received-ipv6: 189490277 dns-tcp-queries-received-ipv4: 6731097 dns-tcp-queries-received-ipv6: 335773 dns-udp-responses-sent-ipv4: 3089303451 dns-udp-responses-sent-ipv6: 189628199 dns-tcp-responses-sent-ipv4: 6684602 dns-tcp-responses-sent-ipv6: 337645