--- service: i.root-servers.net start-period: '2014-12-02T00:00:00Z' end-period: '2014-12-03T00:00:02Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3426032514 dns-udp-queries-received-ipv6: 225852037 dns-tcp-queries-received-ipv4: 6371268 dns-tcp-queries-received-ipv6: 189678 dns-udp-responses-sent-ipv4: 3374601214 dns-udp-responses-sent-ipv6: 225777668 dns-tcp-responses-sent-ipv4: 6396246 dns-tcp-responses-sent-ipv6: 188650