--- service: i.root-servers.net start-period: '2015-08-10T00:00:00Z' end-period: '2015-08-11T00:00:04Z' metric: traffic-volume dns-udp-queries-received-ipv4: 5125766741 dns-udp-queries-received-ipv6: 261038796 dns-tcp-queries-received-ipv4: 19989141 dns-tcp-queries-received-ipv6: 356282 dns-udp-responses-sent-ipv4: 5081518003 dns-udp-responses-sent-ipv6: 263203500 dns-tcp-responses-sent-ipv4: 19914785 dns-tcp-responses-sent-ipv6: 360781