--- service: i.root-servers.net start-period: '2014-10-21T00:00:00Z' end-period: '2014-10-22T00:00:01Z' metric: traffic-volume dns-udp-queries-received-ipv4: 3416952206 dns-udp-queries-received-ipv6: 229116945 dns-tcp-queries-received-ipv4: 7602837 dns-tcp-queries-received-ipv6: 175953 dns-udp-responses-sent-ipv4: 3359106938 dns-udp-responses-sent-ipv6: 233162968 dns-tcp-responses-sent-ipv4: 7730841 dns-tcp-responses-sent-ipv6: 176396