--- service: i.root-servers.net start-period: '2013-10-11T00:00:00Z' end-period: '2013-10-12T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2462184276 dns-udp-queries-received-ipv6: 124753742 dns-tcp-queries-received-ipv4: 4394021 dns-tcp-queries-received-ipv6: 138854 dns-udp-responses-sent-ipv4: 2570747081 dns-udp-responses-sent-ipv6: 132967175 dns-tcp-responses-sent-ipv4: 4443465 dns-tcp-responses-sent-ipv6: 152303