--- service: i.root-servers.net start-period: '2013-10-04T00:00:00Z' end-period: '2013-10-05T00:00:03Z' metric: traffic-volume dns-udp-queries-received-ipv4: 2197048816 dns-udp-queries-received-ipv6: 124946833 dns-tcp-queries-received-ipv4: 5277245 dns-tcp-queries-received-ipv6: 128546 dns-udp-responses-sent-ipv4: 2272413891 dns-udp-responses-sent-ipv6: 133043514 dns-tcp-responses-sent-ipv4: 5310582 dns-tcp-responses-sent-ipv6: 147324